Filed pursuant to Rule 424(b)(4)
Registration No. 333-258032

Prospectus

6,316,000 American Depositary Shares

Representing 315,800 common shares

DOUBLE
DOWN
INTERACTIVE

This is the initial public offering of our common shares, par value (Won)10,000 per share (which we refer to as our “common shares”), in the form of American Depositary Shares (which we refer to as “ADSs”). Twenty ADSs represent one common share. We are offering 5,263,000 ADSs and the selling shareholder named in this prospectus is offering 1,053,000 ADSs. We will not receive any proceeds from the sale of ADSs by the selling shareholder. The initial public offering price is $18.00 per ADS.

Prior to this offering, there has been no public market for our common shares or ADSs. Our ADSs will trade on the NASDAQ Stock Market (“NASDAQ”) under the symbol “DDI.”

We are organized under the laws of the Republic of Korea (“Korea”) and are an “emerging growth company,” as defined in the Jumpstart Our Business Startups Act of 2012, under applicable U.S. federal securities laws and are eligible for reduced public company reporting requirements. See “Prospectus summary—Emerging growth company status.” Our principal shareholder, DoubleU Games Co., Ltd., a Korean company, is expected to own approximately 60.5% of our shares upon consummation of the offering. Consequently, we expect to be a “controlled company” within the meaning of the corporate governance rules of NASDAQ. See “Management—Corporate governance practices.”

Investing in our ADSs involves a high degree of risk. Before buying any of our ADSs, you should carefully read the discussion of material risks of investing in our ADSs in “Risk factors ” beginning on page 14 of this prospectus.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

The selling shareholder has granted the underwriters the option to purchase up to 947,400 additional ADSs from it at the public offering price, less underwriting discount, for 30 days after the date of this prospectus to cover over-allotments. We will not receive any proceeds from the sale of ADSs by the selling shareholder.

The underwriters expect to deliver the ADSs to purchasers on or about September 2, 2021.

The date of this prospectus is August 30, 2021.

Table of contents

You should rely only on the information contained in this prospectus and any free writing prospectus prepared by, or on behalf of, us or to which we have referred you to or otherwise authorized. Neither we nor any of the underwriters have authorized anyone to provide you with information that is different. We are offering to sell our ADSs, and seeking offers to buy our ADSs, only in jurisdictions where such offers and sales are permitted. The information in this prospectus is accurate only as of the date hereof, regardless of the time of delivery of this prospectus or any sale of our ADSs. Our business, financial condition, results of operations and prospects may have changed since that date. Neither we nor the underwriters take any responsibility for, and can provide no assurance as to the reliability of, any information other than the information in this prospectus and any free writing prospectus prepared by us or on our behalf. Neither the delivery of this prospectus nor the sale of our ADSs means that information contained in this prospectus is correct after the date of this prospectus. This prospectus is not an offer to sell or the solicitation of an offer to buy our ADSs in any circumstances under which such offer or solicitation is unlawful.

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Before you invest in our ADSs, you should read the registration statement (including the exhibits thereto and documents incorporated by reference therein) of which this prospectus forms a part.

For investors outside of the United States: Neither we nor any of the underwriters have done anything that would permit this offering or possession or distribution of this prospectus in any jurisdiction where action for that purpose is required, other than in the United States. You are required to inform yourselves about, and observe any restrictions relating to, this offering and the distribution of this prospectus.

For investors in Korea: Pursuant to the laws of Korea, we have filed with the Financial Services Commission of Korea a separate securities registration statement in the Korean language for the benefit of Korean investors who may purchase common shares that are converted from ADSs in the secondary market after the completion of the offering described in this prospectus (“post-IPO Korean investors”). Certain information in such filing is applicable only to the post-IPO Korean investors and therefore is not included in this prospectus. The information contained in such filing does not and will not form a part of this prospectus. Accordingly, you must not rely on any information in such filing.

About this prospectus

As used in this prospectus, unless the context otherwise requires or otherwise states, (a) references to “we,” “us,” “our,” the “Company,” “our Company” and similar references refer to DoubleDown Interactive Co., Ltd., a corporation with limited liability organized under the laws of Korea, which is sometimes referred to in this prospectus as “DDI,” its Korean subsidiary, Double8 Games Co., Ltd. (“Double8 Games”), and its U.S. subsidiaries, DoubleUDiamond, LLC, a Delaware limited liability company (“DUD”), and DoubleDown Interactive, LLC, a Washington limited liability company (“DDI-US”), and (b) references to “DoubleU Games” or “DUG” refer to DoubleU Games Co., Ltd., a Korean company and our controlling shareholder.

The selling shareholder herein is STIC Special Situation Diamond Limited, which is a wholly-owned special purpose entity of STIC Special Situation Private Equity Fund, each of which is a limited liability entity organized under the laws of Korea. References herein to “STIC” refer to STIC Special Situation Private Equity Fund and its wholly-owned affiliate, unless the context otherwise requires.

We have made rounding adjustments to some of the figures included in this prospectus. Accordingly, numerical figures shown as totals in some tables may not be an arithmetic aggregation of the figures that precede them. The terms “dollar,” “USD,” “US$” or “$” refer to the legal currency of the United States. Currency amounts in this prospectus are stated in dollars, unless otherwise indicated. Our reporting currency is the U.S. dollar, and our functional currency is the Korean Won, or KRW or “(Won).” Unless otherwise indicated, convenience translations included in this prospectus of Korean Won into U.S. dollars have been made at the rate of (Won)1,130.42= US$1.00, as reported by the Board of Governors of the Federal Reserve System on June 30, 2021. Historical and current exchange rate information of the Korean Won against the U.S. dollar may be found at https://www.federalreserve.gov/releases/h10/hist/dat00_ko.htm.

Our financial statements are prepared in accordance with U.S. generally accepted accounting principles, or U.S. GAAP. Our fiscal year ends on December 31 of each year as does our reporting year. Therefore, any references to 2020 and 2019 are references to the fiscal and reporting years ended December 31, 2020 and December 31, 2019, respectively. Our most recent fiscal year ended on December 31, 2020. See Note 2 to our consolidated financial statements for the years ended December 31, 2020 and 2019 for a discussion of the basis of presentation, functional currency and translation of financial statements.

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Non-GAAP measures

In addition to U.S. GAAP measures, we also use Adjusted EBITDA, as described under “Management’s discussion and analysis of financial condition and results of operations—Other key performance indicators and non-GAAP metrics and trends—Adjusted EBITDA,” and Adjusted EBITDA margin in various places in this prospectus. These financial measures are presented as supplemental disclosure and should not be considered in isolation of, as a substitute for, or superior to, the financial information prepared in accordance with U.S. GAAP, and should be read in conjunction with the financial statements included elsewhere in this prospectus. Adjusted EBITDA and Adjusted EBITDA margin may differ from similarly titled measures presented by other companies.

Please see “Selected consolidated financial information and operating data” for a reconciliation of non-GAAP financial measures to the most directly comparable financial measure calculated in accordance with U.S. GAAP.

Market and industry data

This prospectus contains references to industry market data and certain industry forecasts. Industry market data and industry forecasts are obtained from publicly available information and industry publications. See “Bibliography of referenced industry sources.” Industry publications generally state that the information contained therein has been obtained from sources believed to be reliable, but that the accuracy and completeness of that information is not guaranteed. Although we believe industry information to be accurate, it is not independently verified by us. In general, we believe there is less publicly available information concerning international social gaming industries than the same industries in the United States. Some data is also based on our good faith estimates, which are derived from our review of internal surveys or data, as well as the independent sources referenced above. Assumptions and estimates of our and our industry’s future performance are necessarily subject to a high degree of uncertainty and risk due to a variety of factors, including those described in “Risk factors.” These and other factors could cause future performance to differ materially from our assumptions and estimates. See “Cautionary note regarding forward-looking statements.”

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Cautionary note regarding forward-looking statements

Various statements contained in this prospectus, including those that express a belief, expectation or intention, as well as those that are not statements of historical fact, are forward-looking statements. These forward-looking statements may include projections and estimates concerning our possible or assumed future results of operations, financial condition, business strategies and plans, market opportunity, competitive position, industry environment, and potential growth opportunities. In some cases, you can identify forward-looking statements by terms such as “may,” “will,” “should,” “design,” “target,” “aim,” “expect,” “could,” “intend,” “plan,” “anticipate,” “estimate,” “believe,” “continue,” “predict,” “project,” “potential,” “goal” or other words that convey the uncertainty of future events or outcomes. You can also identify forward-looking statements by discussions of strategy, plans or intentions. We have based these forward-looking statements on our current expectations and assumptions about future events. While our management considers these expectations and assumptions to be reasonable, they are inherently subject to significant business, economic, competitive, regulatory and other risks, contingencies and uncertainties, most of which are difficult to predict and many of which are beyond our control. These and other important factors, including, among others, those discussed in this prospectus under the headings “Risk factors,” “Management’s discussion and analysis of financial condition and results of operations” and “Our business” may cause our actual results, performance or achievements to differ materially from any future results, performance or achievements expressed or implied by the forward-looking statements in this prospectus.

You are cautioned not to place undue reliance on the forward-looking statements in this prospectus. The forward-looking statements contained in this prospectus are not guarantees of future performance and our actual results of operations and financial condition may differ materially from such forward-looking statements. In addition, even if our results of operations and financial condition are consistent with the forward-looking statements in this prospectus, they may not be predictive of results or developments in future periods.

Any forward-looking statement that we make in this prospectus speaks only as of the date of this prospectus. Except as required by law, we do not undertake any obligation to update or revise, or to publicly announce any update or revision to, any of the forward-looking statements in this prospectus, whether as a result of new information, future events or otherwise, after the date of this prospectus.

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Risk factors

An investment in our ADSs involves a high degree of risk. Before making an investment decision, you should carefully consider the following risk factors, which address the material risks concerning our businesses and an investment in our ADSs, together with the other information contained in this prospectus. If any of the risks discussed in this prospectus occur, our businesses, prospects, liquidity, financial condition, and results of operations could be materially and adversely affected, in which case the value of our ADSs could decline significantly and you could lose all or part of your investment. Some statements in this prospectus, including statements in the following risk factors, constitute forward-looking statements. Please refer to the section entitled “Cautionary note regarding forward-looking statements.”

Risks related to our business and industry

Our profitability may be affected by the rate at which we grow our business. The inability to successfully manage our current and future growth may materially and adversely affect our results of operations and financial condition.

We have grown the business since the acquisition of DDI-US from IGT in 2017 and we intend to continue to expand the scope and geographic relevance of the games we provide. Our total revenue increased to $358.3 million in 2020 from approximately $273.6 million in 2019, and to $189.9 million for the six months ended June 30, 2021 from $175.1 million for the six months ended June 30, 2020. Achieving our growth strategy will depend, in large part, upon the rate at which we are able to attract and retain paying players to our games, create engaging content, and expand geographically.

Our ability to increase the number of players of our games will depend on continued player adoption of online social casino and other forms of casual online gaming. Growth in the online gaming industry and the level of demand for and market acceptance of our games are subject to a high degree of uncertainty. We expect that the overall number of our customers and the amount they are willing to invest in our games will fluctuate from time to time. The rate at which we acquire paying players may be affected by increased competition, general economic conditions, or other factors. In addition, we may not be successful in providing sufficient incentives and creating engaging content to retain our existing customers and attract new customers. If we are unable to successfully acquire, retain, and monetize players who make purchases in our games, our operations and financial condition will be adversely affected and our profitability may decline.

In addition, we hope to grow our player base through geographic expansion of our markets, particularly in Asia-Pacific and Western Europe. However, significant growth in such markets may not be successful if we do not plan the timing of the expansion appropriately, understand the social and other factors driving player participation in such markets so that we can adapt our content accordingly, and effectively navigate the regulatory environment in which we may be required to operate. If we are unable to properly and prudently manage our operations as we continue to grow, if the quality of our games deteriorates, or if we are unable to provide suitable incentives and content, our name and reputation could be severely harmed, and our business, prospects, financial condition, and results of operations could be adversely affected.

We rely on a small percentage of our players for all of our revenue.

Our games are available to players for free, and we generate revenue from players only if they voluntarily purchase virtual chips above and beyond the level of free virtual chips provided periodically as part of the games. In particular, we monitor the number of players who make a purchase to assess any periodic changes in behavior and associated trends. Average MPUs, or the average number of players who made a purchase at least once in a month, had increased from 2019 to 2020, and decreased in the six months ended June 30, 2021 compared to the same period in 2020. Further, our overall payer conversion rate during fiscal years 2019 and

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2020 has increased from 5.2% in 2019 to 5.4% in 2020, and from 5.2% for the six months ended June 30, 2020 to 5.8% for the six months ended June 30, 2021. Our paying players may stop making purchases in our games or playing our games altogether at any time. In order to sustain or increase our revenue levels, we must increase the amount our players spend in our games and/or increase the number of players who purchase virtual chips. To retain paying players, we must devote significant resources so that the games they play retain their interest and motivate them to purchase virtual chips through incentives and engaging content. If the average amount spent by our paying players declines, if we fail to offer games that sufficiently incentivize players to purchase our virtual chips, or if we fail to properly manage the economics of free versus paid chips, our business, financial condition, and results of operations could be materially and adversely affected.

Our DoubleDown Casino game has generated substantially all of our revenue, and we intend to continue to refresh content and launch new games in order to attract and retain a significant number of paying players to grow our revenue and sustain our competitive position.

Historically, DoubleDown Casino has accounted for substantially all our revenue (half year 2021: 97.0%; 2020: 95.7%; 2019: 96.3%), and we expect that this dependency will continue for the foreseeable future while we endeavor to further diversify our portfolio through the addition of new games. See “Our business—Our games.” Our growth will depend, in part, on our ability to consistently refresh content for our existing games to promote engagement with our players, as well as launch new games that achieve significant popularity. However, as we add new games to our portfolio, certain of our players may leave existing games, such as DoubleDown Casino, and move to a new offering. As we refresh content and develop new games, we expend significant resources in research and development, analytics, marketing, and others to design, test, and launch refreshed content and our new games.

Our ability to successfully and timely design, test, and launch our games and provide refreshed content, as well as attract and retain paying players, largely depends on our ability to, among other things:

If we do not successfully extend the life of our existing games and launch games that attract and retain a significant number of paying players, our market share, reputation, and financial results could be harmed. In addition, if the popularity of any of our most successful games decreases significantly, it would have a material adverse effect on our results of operations, cash flows, and financial condition. We cannot assure that our initiatives to improve our player experience will always be successful.

We rely substantially on third-party platforms to make our games available to players and to collect revenue.

Our games are distributed through several main platform providers, including Apple, Facebook, Google, and Amazon, which also provide us valuable information and data, such as the rankings of our games. Substantially all of our revenue is generated by players using those platforms. Consequently, our expansion and prospects

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depend on our continued relationships with these providers, and any emerging platform providers that are widely adopted by our target player base in the geographic markets in which we operate.

We are subject to the standard terms and conditions that these platform providers have for application developers, which govern the promotion, distribution and operation of games and other applications on their platforms, and which the platform providers can change unilaterally on short or no notice. Our business would be harmed if:

If alternative platforms increase in popularity, we could be adversely impacted if we fail to create compatible versions of our games in a timely manner, or if we fail to establish a relationship with such alternative platforms. Likewise, if our existing platform providers alter their operating platforms or browsers, we could be adversely impacted as our offerings may not be compatible with the altered platforms or browsers or may require significant and costly modifications in order to become compatible. If our platform providers were to develop competitive offerings, either on their own or in cooperation with one or more competitors, our growth prospects could be negatively impacted. If our platform providers do not perform their obligations in accordance with our platform agreements, we could be adversely impacted.

In the past, some of these providers’ platforms have been unavailable for short periods of time or experienced issues with certain features. If such events occur on a prolonged basis or other similar issues arise that impact players’ ability to download our games, access social features, or purchase virtual chips, it could have a material adverse effect on our revenue, operating results, and reputation.

Depending on their outcomes, certain legal proceedings can materially adversely affect our business and our results of operations, cash flows, and financial condition.

We have been party to, are currently party to, and in the future may become subject to additional, legal proceedings in the operation of our business, including, but not limited to, with respect to consumer protection, gaming-related matters, employee matters, alleged service and system malfunctions, alleged intellectual property infringement, and claims relating to our contracts, licenses, and strategic investments.

For example, in 2015, a plaintiff commenced a putative class action in the United States District Court for the Western District of Washington against Churchill Downs Incorporated, one of our competitors, alleging that Churchill Downs’ virtual game platform, “Big Fish Casino,” violated Washington’s Recovery of Money Lost at Gambling Act (“WRMLGA”) and Consumer Protection Act (“CPA”). The District Court dismissed plaintiff’s action. On March 28, 2018, the United States Court of Appeals for the Ninth Circuit reversed the District Court’s holding, concluding that, because Big Fish Casino’s virtual chips are a “thing of value,” Big Fish Casino falls under the WRMLGA. The Ninth Circuit remanded the action to the District Court for further proceedings consistent with its

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opinion. On March 4, 2020, plaintiff’s motion for class certification was denied by the District Court without prejudice to refile. Additional class actions have been commenced against other of our competitors on similar grounds, certain of which, including Churchill Downs, have finalized settlements which the court approved on February 11, 2021 in amounts of $6.5 million, $38.0 million, and $155.0 million. These settlements included requirements for modifications to the games that allowed them to continue to operate. We have assessed these required modifications and have already implemented these changes to the ways our DoubleDown Casino game operates. Such amounts are illustrative only and are not indicative of, and provide no certainty with respect to, amounts at which other cases, including the Benson case discussed below, may settle, if at all, or amounts that may be rendered in a judgment after trial on the merits.

In April 2018, a putative class action lawsuit, Benson, et al. v. DoubleDown Interactive and International Game Technology, was filed against DDI-US in the United States District Court for the Western District of Washington based upon the theory, like Big Fish Casino, that the use of the DoubleDown Casino Facebook and mobile applications violated the WRMLGA and CPA. The plaintiffs make their allegations on behalf of themselves and “all persons in the United States who purchased and lost chips by wagering at the DoubleDown Casino.” Plaintiffs seek to recover, on behalf of themselves and the class, among other things, (i) all money they wagered and lost playing DDI-US games; and (ii) treble damages. Plaintiffs also seek injunctive and/or declaratory relief as necessary to protect the interests of Plaintiff and the class. On November 13, 2018, the District Court denied DDI-US’s motion to compel arbitration. DDI-US filed an appeal to the United States Court of Appeals for the Ninth Circuit, arguing that plaintiff’s action should have been dismissed because their individual cases are subject to the arbitration agreement in the applicable Terms of Use. On January 29, 2020, DDI-US’s appeal to the Ninth Circuit was denied and the case was remanded to the District Court for further proceedings. On June 17, 2020, the Company filed a motion in the United States District Court for the Western District of Washington, which, if granted, would certify certain questions of state law to the Washington State Supreme Court for interpretation in accordance with applicable state law. On August 11, 2020, the District Court denied DDI-US’s motion to certify certain questions to the Washington State Supreme Court. DDI-US subsequently filed a motion asking the court to reconsider this decision. On January 15, 2021, this motion for reconsideration was denied. On August 13, 2020, DDI-US filed a motion to strike the plaintiffs’ nationwide class allegations. On March 19, 2021, this motion was denied. On September 10, 2020, DDI-US filed a complaint in Washington State court against the two plaintiffs in the federal court case arguing that, since the gambling law referenced in the federal action is a Washington state law, any complaint should be litigated in Washington State court. On February 25, 2021, plaintiffs filed a motion for class certification and for preliminary injunction. Discovery in the federal court case has commenced and is continuing. On July 19, 2021, the court ordered that the parties hold a settlement conference by September 7, 2021. On April 25, 2021, plaintiffs filed their Second Amended Complaint, changing their allegations to include an additional corporate entity of co-defendant, IGT. DDI-US served plaintiffs with its expert disclosures and filed an Opposition to Plaintiffs’ Motion for Class Certification and Preliminary Injunction on May 11, 2021. On June 29, 2021, the court denied the Company’s motion for the certification of an interlocutory appeal from the court’s order denying the Company’s Motion to Strike Nationwide Class Action Allegations. No trial date has been set at this time. We dispute any allegation of wrongdoing and will continue to vigorously defend ourselves in this matter. See “Our business—Legal proceedings.”

In connection with the Benson case, IGT tendered us its defense of the lawsuit and sought indemnity from us and certain of our affiliates for any damages from the lawsuit, based on various agreements associated with IGT’s sale of DDI-US to us. We had previously tendered IGT our defense and sought indemnity from it. The parties have entered into a standstill or tolling agreement, which expires on or before September 1, 2021. There can be no guarantee, however, that we will be able to secure indemnification for any damages from the lawsuit.

We have incurred and expect to continue to incur significant expense defending the Benson lawsuit, and we may incur in the future significant expense with respect to any other lawsuits to which we may become a party. In general,

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subject to certain terms and conditions, insurance coverage for our litigation expenses and losses arising out of legal proceedings is assessed by our insurers on a case by case basis and there can be no guarantee that coverage will be available in any particular case. However, in connection with the Benson lawsuit, our insurer will not cover such expenses or any losses that could arise for any settlement amount or damages award.

The resolution of the Benson lawsuit, whether through the court or through settlement, could have a material adverse effect on our operating results and financial condition. As set out in Note 10 to the unaudited consolidated financial statements for the period ended June 30, 2021, the Company has recorded a charge to income for this litigation, which is included in general & administrative expenses. However, the Company may experience a loss in excess of the amount recorded, which could be material; the ultimate outcome cannot be known at this time due to the significant incomplete, uncertain, and unknown variables inherent with this stage of the pending litigation. The amount recorded represents management’s estimate, in accordance with applicable accounting standards, of the low end of the reasonably possible range of loss of $3.5 million to $201.5 million. Management will continue to evaluate the reasonably possible range of loss and the amount recorded as the litigation proceeds over time, potentially resulting in a material adjustment thereto. As noted above, our operating results and financial condition could be materially adversely impacted by the resolutions of the Benson case. We continue to dispute any allegation of wrongdoing and we intend to continue our vigorous defense in this matter. There can be no guarantee that, in such an event, we will be able to recover all or any part of any damages award or, if applicable, settlement amount, or obtain a contribution with respect thereto, from any other defendant. Additionally, there can be no guarantee as to what, if any, additional modifications any judgments or settlements might impose on one or more of our games.

In the future, additional legal proceedings or regulatory investigations targeting our social casino games and claiming violations of state or federal laws could also occur in other states, based on the unique and particular laws of each jurisdiction. We could, in connection with any such proceedings or regulatory actions, including as a result of the Benson case, be restricted from operating social casino games in certain states, or be required to make modifications to the operation of one or more of our games, or have to pay significant damage awards or settlement amounts. We cannot predict the likelihood, timing, or scope of the consequences of such an outcome, or the outcome of any other legal proceedings to which we may be a party, any of which could have a material adverse effect on our results of operations, cash flows, or financial condition.

In addition, in December 2020, a patent infringement claim, NEXRF Corp. v. DoubleU Games Co., Ltd., et al., was filed against DoubleU Games, DDI-US and us in the United States District Court for the Western District of Washington. The plaintiff alleges that the defendants are infringing certain patents related to certain of its games and is seeking monetary damages. On April 29, 2021, we, DoubleU Games, and DDI-US filed a motion to dismiss the case as well as a motion to stay discovery pending adjudication of motion to dismiss. The parties agreed to an interim stay of discovery pending resolution of the motion to stay. On May 28, 2021, plaintiff made a settlement demand of $7.5 million, to which we have not responded. Rulings on these motions are pending. Due to the early nature of this case, it is not possible to assess whether this case may be material to our business. We intend to defend the case vigorously.

On May 14, 2021, Hanover Insurance Co. filed a declaratory judgment action alleging that its insurance policy does not cover the claims made by NEXRF Corp. v. DoubleU Games Co., Ltd., et al. We have accepted service of the complaint, but have not yet responded.

Certain social opposition to interactive gaming or potential issues relating to social casino games could adversely impact our business and limit the growth of our operations.

There is certain opposition in some jurisdictions to interactive online gaming, including social casino games. In September 2018, the World Health Organization added “gaming disorder” to the International Classification of Diseases, defining the disorder as a pattern of behavior characterized by impaired control over gaming and an

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increase in the priority of gaming over other interests and daily activities. Some states or countries have anti-gaming groups that specifically target social casino games. Such opposition could lead these jurisdictions to adopt legislation or impose a regulatory framework to govern interactive social gaming or social casino games specifically and which could require us to comply with stringent regulations and/or require us to modify our operations in order to so comply. These could result in a prohibition on interactive online gaming or social casino games altogether, restrict our ability to advertise our games, encourage our existing platform partners to restrict our ability to deploy our games through their media, or substantially increase our costs to comply with these regulations, all of which could have an adverse effect on our results of operations, cash flows, and financial condition. We cannot predict the likelihood, timing, scope, or terms of any such legislation or regulation or the extent to which they may affect our business. In addition, certain third-party distribution platforms on which we rely have had lawsuits brought against them for servicing social casino games, which may limit our access to such platforms.

On September 17, 2018, 15 international gambling regulators, plus the Washington State Gambling Commission, signed a declaration expressing concern “with the risks posed by the blurring of lines between gambling and other forms of digital entertainments such as video gaming,” including, among others, social casino gaming. The regulators committed to work together to analyze the characteristics of video games and social gaming, and to engage in an informed dialogue with the video game and social gaming industries to ensure the appropriate and efficient implementation of applicable laws and regulations. The regulators also indicated they would work closely with their consumer protection enforcement agencies. We cannot predict the likelihood, timing, scope, or terms of any actions taken as a result of the declaration.

Consumer protection concerns regarding games such as ours have been raised in the past and may again be raised in the future. These concerns include (i) whether social casino games may be shown to serve as a gateway for adolescents to monetary gambling, and (ii) a concern that social casino gaming companies are using big data and advanced technology to predict and target “vulnerable” users who may spend significant time and money on social casino games in lieu of other activities. Such concerns could lead to increased scrutiny, including the potential imposition of a regulatory framework, over the manner in which our games are designed, developed, distributed, and presented. It is difficult for us to monitor and enforce age or other jurisdictional restrictions with respect to players who download or play our games, as we rely on third-party distribution platforms such as Apple App Store, Facebook, Google Play Store, and Amazon Appstore. We cannot predict the likelihood, timing, or scope of any concern reaching a level that will impact our business, or whether, as a result, we would suffer any adverse impacts to our results of operations, cash flows, financial condition, and reputation.

We rely on the ability to use the intellectual property rights of third parties, and we may lose the benefit of some of the intellectual property licensed to us if the license agreements are terminated.

Substantially all of the content and related intellectual property incorporated into our games are licensed from third parties, in particular IGT and DUG. Since June 2017, we have been party to a Game Development, Distribution and Services Agreement with IGT (which we refer to as the “IP License Agreement”), pursuant to which we are granted the right to develop and distribute certain IGT game titles and related intellectual property. Under the IP License Agreement, we expect, but cannot guarantee, that we will be able to continue to receive those rights on favorable or reasonable terms. In addition, although IGT has the right to terminate the IP License Agreement for cause, we will retain exclusive, perpetual, and irrevocable use of any IGT intellectual property already used by us for games launched before June 1, 2020 (excluding third party rights that IGT no longer has rights to itself), except in limited circumstances. For each slot game first launched in the social online game field starting on June 1, 2020, the license from IGT is non-exclusive, perpetual and irrevocable. See “Our business—Intellectual property.” In addition, we have licensing arrangements with our controlling shareholder, DUG, since March 2018, pursuant to which we are granted an exclusive license to develop and

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distribute certain of their social casino game titles and sequels, subject to our payment of customary terms and license fees. As of June 30, 2021, we license approximately 38 game titles that are actively offered to players. As amended to date, the agreement remains in effect until either DUG no longer holds an interest, directly or indirectly, in DDI, or DDI no longer holds an interest, directly or indirectly, in DDI-US. In such event, the agreement provides that the parties will mutually renegotiate the terms of the agreement. We expect, but cannot guarantee, that we will be able to continue to receive those rights on favorable or reasonable terms. See “Our business—Intellectual property.”

The future success of our business will depend, in part, on our ability to retain or expand intellectual property licenses. We cannot assure that these third-party licenses will continue to be available to us on commercially reasonable terms, if at all. Further, existing and future license arrangements containing royalty provisions could cause us to incur impairment charges in connection with minimum guarantees. To address these risks, we have increased our research and development capabilities in order to create proprietary intellectual property, including content, although there is no guarantee we will be able to create content that receives sufficient acceptance from the market or that is developed in a timely manner. In the event that we are unable to create such content and, in addition, if we lose the benefit of, or cannot renew and/or expand existing licenses with IGT and DUG, we may be required to discontinue or limit our use of certain game titles and related technologies that include or incorporate the licensed intellectual property.

Our business depends on the protection of our proprietary information and our owned and licensed intellectual property.

We believe that our success depends in part on protecting our owned and licensed intellectual property in the United States and other countries. Our intellectual property includes certain patents, trademarks and copyrights relating to our games, and proprietary or confidential information that is not subject to formal intellectual property protection. Much of our intellectual property that is significant to our business is owned by DoubleU Games or IGT and licensed to us, and we do not control the protection and maintenance of such intellectual property from third parties, and must rely on them to protect and maintain such intellectual property. Our success may depend, in part, on our and our licensors’ ability to protect the trademarks, trade dress, names, logos, or symbols under which we market our games and to obtain and maintain patent, copyright, and other intellectual property protection for the technologies, designs, software, and innovations used in our games and our business. We cannot assure that we will be able to build and maintain consumer value in our proprietary trademarks and copyrights or otherwise protect our technologies, designs, software, and innovations or that any patent, trademark, copyright, or other intellectual property right will provide us with competitive advantages.

We also rely on trade secrets and proprietary knowledge. We enter into confidentiality agreements with our employees and independent contractors regarding our trade secrets and proprietary information, but we cannot assure that the obligation to maintain the confidentiality of our trade secrets and proprietary information will be honored by such individuals.

In the future we may make claims of infringement against third parties or make claims that third-party intellectual property rights are invalid or unenforceable. These claims could cause us to incur greater costs and expenses in the protection of our intellectual property and could potentially negatively impact our intellectual property rights, for example, by causing one or more of our intellectual property rights to be ruled or rendered unenforceable or invalid.

Despite our efforts to protect our intellectual property rights, the steps we take in this regard might not be adequate to prevent or deter infringement or other misappropriation of our intellectual property by competitors or other third parties.

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The intellectual property rights of others may prevent us from developing new games and/or entering new markets, or may expose us to liability or costly litigation.

Our success depends in part on our ability to continually adapt our games to incorporate new technologies as well as intellectual property related to game mechanics and procedures, and to expand into markets that may be created by these new developments. If technologies are protected by the intellectual property rights of our competitors or other third parties, we may be prevented from introducing games based on these technologies or expanding into markets created by these technologies.

We cannot assure that our business activities and games will not infringe upon the proprietary rights of others, or that other parties will not assert infringement claims against us. A successful claim of infringement by a third party against us, our games or one of our licensees in connection with the use of our technologies, game mechanics or procedures, or an unsuccessful claim of infringement made by us against a third party or its products or games, could adversely affect our business or cause us financial harm. Any such claim and any resulting litigation, should it occur, could:

Our success depends upon our ability to acquire and retain players, as well as adapt to and offer games that keep pace with changing technology and evolving industry standards.

Our ability to acquire and retain players is largely driven by our success in maintaining and increasing the quantity and quality of games in our portfolio. To satisfy players, we need to continue to improve their online gaming experience and innovate and introduce games that our players find more rewarding to play than those of our competitors. This will require us to, among other things, continue to improve our technology, game mechanics, and procedures to optimize search results for our games, tailor our game offerings to additional geographic and demographic market segments, and improve the user-friendliness of our games, while working to minimize the risk that players will be diverted from our existing games to one of our new games resulting in reduced purchases by those players. Our ability to anticipate or respond to changing technology and evolving industry standards and to develop and introduce new and enhanced games on a timely basis, or at all, is a significant factor affecting our ability to remain competitive and expand and attract new players. We cannot assure that we will have the financial and technical resources needed to introduce new games on a timely basis, or at all.

Further, as technological or regulatory standards change and we modify our games to comply with those standards, we may need players to take certain actions to continue playing, such as downloading a new game, performing age-gating checks or accepting new terms and conditions. Players may stop using our games at any time, including if the quality of the player experience on our games and our support capabilities in the event of a problem do not meet their expectations or keep pace with the quality of the player experience generally offered by competitive games and services.

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Our players depend on our support organization to resolve any issues relating to our games. Our ability to provide effective support is largely dependent on our ability to attract, resource, and retain employees who are not only qualified to support players of our games, but are also well versed in our games. Any failure to maintain high-quality support, or a market perception that we do not maintain high-quality support, could harm our reputation, adversely affect our ability to sell virtual chips within our games to existing and prospective players, and adversely impact our results of operations, cash flows, and financial condition.

Our global operations expose us to business and legal risks, which could restrict or limit our ability to execute our strategy.

Substantially all of our revenues are currently generated through DDI-US in the United States. Our headquarters and significant game development operations are based in Seoul, Korea. We are subject to risks customarily associated with such global operations, including: the complexity of laws, regulations, and markets in the countries in which we operate; the uncertainty of enforcement of remedies in certain jurisdictions; the effect of currency exchange rate fluctuations; export control laws; the impact of foreign labor laws and disputes; the ability to attract and retain key personnel; the economic, tax, and regulatory policies of local governments; compliance with applicable anti-money laundering, anti-bribery, and anti-corruption laws, including the Foreign Corrupt Practices Act, The Improper Solicitation and Graft Act of Korea, and other anti-corruption laws that generally prohibit persons and companies and their agents from offering, promising, authorizing, or making improper payments to foreign government officials for the purpose of obtaining or retaining business; and compliance with applicable sanctions regimes regarding dealings with certain persons or countries. Certain of these laws also contain provisions that require accurate recordkeeping and further require companies to devise and maintain an adequate system of internal accounting controls.

If we adopt policies and controls that are ineffective or an employee or intermediary fails to comply with the applicable regulations, we may be subject to criminal and civil sanctions and other penalties. Any such violation could disrupt our business and adversely affect our reputation, results of operations, cash flows, and financial condition. In addition, our business operations could be interrupted and negatively affected by terrorist activity, political unrest, or other economic or political uncertainties. Moreover, countries, including in particular Korea and the United States, could impose tariffs, quotas, trade barriers, and other similar restrictions that adversely impact the international nature of our business.

Further, our ability to expand successfully in other countries involves other risks, including difficulties in integrating local operations, risks associated with entering jurisdictions in which we may have little experience and the day-to-day management of a growing and increasingly geographically diverse company. We may not realize the operating efficiencies, competitive advantages or financial results that we anticipate from our investments in countries other than Korea and the United States.

Data privacy and security laws and regulations in the jurisdictions in which we do business could increase the cost of our operations and subject us to possible sanctions and other penalties.

We collect, process, store, use, and share data, some of which contains limited personal information. Consequently, our business is subject to a number of U.S. and international laws and regulations governing data privacy and security, including with respect to the collection, storage, use, transmission, sharing, and protection of personal information. Data privacy protection laws are rapidly changing and likely will continue to do so for the foreseeable future and may be inconsistent from jurisdiction to jurisdiction.

We are subject to U.S. federal and state and foreign laws related to the privacy and protection of player data. Such regulations such as the General Data Protections Regulation (“GDPR”) from the European Union (“EU”), the United Kingdom’s Data Protection Act of 2018, the UK GDPR, and the California Consumer Privacy Act are new, untested laws and regulations that could affect our business, and the potential impact is unknown. See “Our business— Regulation

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of the industry.” We are also subject to evolving laws and regulations that dictate under what circumstances we can transfer, process and/or receive certain data that is critical to our operations, including data shared between countries or regions in which we operate. For example, in July 2020, the European Union-U.S. Privacy Shield was invalidated by the Court of Justice of the European Union (“CJEU”). Other bases to legitimize the transfer of such data, such as Standard Contractual Clauses (“SCCs”), have been subjected to regulatory and judicial scrutiny. If one or more of the legal bases for transferring data from Europe to the United States is invalidated or the transfer frameworks are amended, if we are unable to transfer data between and among countries and regions in which we operate, or if we are restricted from sharing data among our products and services, it could affect the manner in which we operate and require us to change our data processing policies and measures, which may be burdensome and difficult to undertake successfully, and could adversely affect our financial results.

There currently are a number of other proposals related to data privacy and security pending before several legislative and regulatory bodies. For example, the European Union is contemplating the adoption of the Regulation on Privacy and Electronic Communications (the “e-Privacy Regulation”). While this regulation was planned to take effect simultaneously with GDPR, it is currently still being debated and discussed by the EU member states. The e-Privacy Regulation focuses on the privacy of electronic communications and, in that respect, it contains new rules for direct marketing activities. It is highly likely that these rules will lead to new consent requirements.

Due to the rapidly changing nature of these data privacy protection laws, there is not always clear guidance from the respective governments and regulators regarding the interpretation of the law, which may create the risk of an inadvertent violation. Efforts to comply with these and other data privacy and security restrictions that may be enacted could require us to modify our data processing practices and policies, incorporate privacy by design into our games, and will significantly increase the cost of our operations. Failure to comply with such restrictions could subject us to criminal and civil sanctions and other penalties. In part due to the uncertainty of the legal climate, complying with regulations, and any applicable rules or guidance from self-regulatory organizations relating to privacy, data protection, information security, and consumer protection, may result in substantial costs and may necessitate changes to our business practices, which may compromise our growth strategy, adversely affect our ability to attract or retain players, and otherwise adversely affect our business, financial condition, and operating results.

Any failure or perceived failure by us to comply with our posted privacy policies or terms of use, our privacy-related obligations to players or other third parties, or any other legal obligations or regulatory requirements relating to privacy, data protection, or information security may result in governmental investigations or enforcement actions, litigation, claims, or public statements against us by consumer advocacy groups or others, and could result in significant liability, cause our players to lose trust in us, and otherwise materially and adversely affect our reputation and business. Furthermore, the costs of compliance with, and other burdens imposed by, the laws, regulations, and policies that are applicable to us may limit the adoption and use of, and reduce the overall demand for, our games.

Additionally, if third parties we work with violate applicable laws, regulations, or agreements, such violations may put our players’ data at risk, or result in governmental investigations or enforcement actions, fines, litigation, claims, or public statements against us by consumer advocacy groups or others, and could result in significant liability, cause our players to lose trust in us, and otherwise materially and adversely affect our reputation and business. Further, public scrutiny of, or complaints about, technology companies or their data handling or data protection practices, even if unrelated to our business, industry, or operations, may lead to increased scrutiny of technology companies, including us, and may cause government agencies to enact additional regulatory requirements or to modify their enforcement or investigation activities, which may increase our costs and risks.

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Security breaches or other disruptions could compromise our information or the information of our players. If we sustain cyber-attacks or other security incidents that result in data breaches, we could suffer a loss of players and associated revenue, increased costs, exposure to significant liability, reputational harm, and other negative consequences.

Our business sometimes involves the storage, processing, and transmission of certain proprietary, confidential, and personal information of our players. We also maintain certain other proprietary and confidential information relating to our business and personal information of our personnel. Despite our security measures, our information technology may be subject to cyber-attacks, viruses, malicious software, break-ins, theft, computer hacking, employee error or malfeasance, or other security breaches. Hackers and data thieves are increasingly sophisticated and operate large-scale and complex automated attacks. Experienced computer programmers and hackers may be able to penetrate our security controls and misappropriate or compromise sensitive personal, proprietary, or confidential information, create system disruptions, or cause shutdowns. They also may be able to develop and deploy malicious software programs that attack our systems or otherwise exploit any security vulnerabilities.

Our systems and the data stored on those systems may also be vulnerable to security incidents or security attacks, acts of vandalism or theft, coordinated attacks by activist entities, misplaced or lost data, human errors, or other similar events that could negatively affect our systems, the data stored on those systems, and the data of our business partners. Further, third parties, such as hosted solution providers, that provide services to us, could also be a source of security risks in the event of a failure of their own security systems and infrastructure. An increasing number of online services have disclosed security breaches, some of which have involved sophisticated and highly targeted attacks on portions of their services. Because the techniques used to obtain unauthorized access, disable or degrade service, or sabotage systems change frequently and often are not foreseeable or recognized until launched against a target, we may be unable to anticipate these techniques or to implement adequate preventative measures. Any security breach or incident that we experience could result in unauthorized access to, misuse of, or unauthorized acquisition of our or our players’ data, the loss, corruption or alteration of this data, interruptions in our operations, or damage to our computers or systems or those of our players or third-party platforms. Any of these could expose us to claims, litigation, fines, and potential liability.

The costs to eliminate or address the foregoing security threats and vulnerabilities before or after a cyber incident could be significant. Our remediation efforts may not be successful and could result in interruptions, delays or cessation of service, and loss of existing or potential suppliers or players. As threats related to cyber-attacks develop and grow, we may also find it necessary to make further investments to protect our data and infrastructure, which may impact our operations. Although we have insurance coverage for protecting against cyber-attacks, it may not be sufficient to cover all possible claims, and we may suffer losses that could have a material adverse effect on our business. We could also be negatively impacted by existing and proposed laws and regulations, and government policies and practices related to cybersecurity, data privacy, data localization, and data protection in the United States, Korea, the European Union, and other countries.

If an actual or perceived breach of our security occurs, public perception of the effectiveness of our security measures for our games and content could be harmed, and we could lose players. Data security breaches and other data security incidents may also result from non-technical means, for example, actions by employees or contractors. Any compromise of our security could result in a violation of applicable privacy and other laws, regulatory or other governmental investigations, enforcement actions, and legal and financial exposure, including potential contractual liability that is not always limited to the amounts covered by our insurance. Any such compromise could also result in damage to our reputation and a loss of confidence in our security measures. Any of these effects could have a material adverse impact on our results of operations, cash flows, and financial condition.

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Our business depends on our ability to collect and use data to deliver relevant content and advertisements, and any limitation on the collection and use of this data could cause us to lose revenues.

When our players use our games, we may process, store, use, and share data about our players, some of which contains limited personal information. We use some of this data to provide a better experience for the player by delivering relevant content and advertisements. Our players may decide not to allow us to collect some or all of this data or may limit our use of this data. Any limitation on our ability to collect data about players and game interactions would likely make it more difficult for us to deliver targeted content and advertisements to our players. Interruptions, failures or defects in our data collection, mining, analysis and storage systems, as well as privacy concerns and regulatory restrictions regarding the collection of data, could also limit our ability to aggregate and analyze player data. If that happens, we may not be able to successfully adapt to player preferences to improve and enhance our games, retain existing players and maintain the popularity of our games, which could cause our business, financial condition, or results of operations to suffer.

Additionally, Internet-connected devices and operating systems controlled by third parties increasingly contain features that allow device users to disable functionality that allows for the delivery of advertising on their devices, including through Apple’s Identifier for Advertising, or IDFA, or Google’s Advertising ID, or AAID, for Android devices. Device and browser manufacturers may include or expand these features as part of their standard device specifications. For example, when Apple announced that UDID, a standard device identifier used in some applications, was being superseded and would no longer be supported, application developers were required to update their apps to utilize alternative device identifiers such as universally unique identifier, or, more recently, IDFA, which simplifies the process for Apple users to opt out of behavioral targeting. If players elect to utilize the opt-out mechanisms in greater numbers, our ability to deliver effective advertisements would suffer, which could adversely affect our revenues from in-game advertising.

We are subject to certain risks as an environmental, social and governance driven company.

We believe that a contributor to our success has been our commitment to environmental, social and governance based values, and we strive to operate our gaming business in a socially responsible manner. Internally, attracting, developing, and retaining top talent in an environment that promotes employee well-being, safety, development, diversity and inclusion is a part of our long-term strategy. However, we may be affected by negative reports or publicity if we fail, or are perceived to have failed, to live up to these values. For example, providing a safe and responsible online gaming environment for users is central to our operations. As a result, our brands and reputation may be negatively affected by the actions of users that are deemed to be irresponsible while using our apps. Similarly, any negative publicity about activity in the business that is perceived to be contrary to our human capital management policies would negatively affect our brands and reputation.

In addition, we may make decisions regarding our business and games in accordance with our values that may negatively impact our short- or medium-term operating results if we believe those decisions are consistent with such values and will improve the aggregate user experience or promotes employee well-being, safety, development, diversity and inclusion. Although we expect that our commitment to environmental, social and governance based values will, accordingly, improve our financial performance over the long term, these decisions may not be consistent with the expectations of investors and any longer-term benefits may not materialize within the time frame we expect or at all, which could harm our business, revenue and financial results.

If the use of mobile devices as gaming platforms and the proliferation of mobile devices generally do not increase, our business could be adversely affected.

The number of people using mobile devices has increased significantly over time and we expect that this trend will continue. However, the mobile market, particularly the market for mobile games, may not grow in the way we anticipate. Approximately 72% of our revenue for the six months ended June 30, 2021, 72% of our revenue

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for the year ended December 31, 2020 and 68% for the year ended December 31, 2019 was attributable to mobile device use. If the mobile devices on which our games are available decline in popularity or become obsolete faster than anticipated, we could experience a decline in revenue and may not achieve the anticipated return on our development efforts. Any such decline in the growth of the mobile market or in the use of mobile devices for games could harm our business, financial condition, or results of operations.

We operate in a highly competitive industry, and our success depends on our ability to effectively compete.

Online gaming is a rapidly evolving industry with low barriers to entry. Businesses can easily launch online or mobile platforms and applications at nominal cost by using commercially available software or partnering with various established companies in these markets, but may not offer the same level of sophistication or capabilities as our games. The market for our games is also characterized by rapid technological developments, frequent launches of new games and content, changes in player needs and behavior, disruption by innovative entrants, and evolving business models and industry standards. As a result, our industry is constantly changing games and business models in order to adopt and optimize new technologies, increase cost efficiency, and adapt to player preferences.

We face competition for leisure time and discretionary spending of our players. Other forms of leisure activities, such as offline, traditional online, personal computer and console games, television, movies, sports, and the internet, offer much larger and more well-established options for consumers. Consumer tastes and preferences for leisure activities are also subject to sudden or unpredictable change due to new innovations. If consumers do not find our games to be compelling or if other existing or new leisure activities are perceived by our players to offer greater variety, affordability, interactivity, and overall enjoyment, our business could be materially and adversely affected.

We also compete with online gaming companies, including those that offer social casino games such as Playtika, Zynga, SciPlay, Aristocrat, and others, and some of these companies have a base of existing players that is larger than ours. In addition, our controlling shareholder, DoubleU Games, also creates and markets online games and represents a potential source of competition for talent, content development, and players. The interests of DoubleU Games may, from time to time, conflict or compete with our interests. Some of our current and potential competitors, including DoubleU Games, enjoy substantial competitive advantages, such as greater financial, technical, and other resources and, in some cases, the ability to rapidly combine online platforms with traditional staffing solutions. These companies may use these advantages to develop different platforms and services to compete with our games, spend more on advertising and marketing, invest more in research and development or respond more quickly and effectively than we do to new or changing opportunities, technologies, standards, regulatory conditions, or player preferences or requirements. If we are not able to respond to and manage competitive pressure on our business effectively, it could adversely impact our results of operations, cash flows, and financial condition.

If we do not successfully invest in, establish and maintain awareness of our games, if we incur excessive expenses promoting and maintaining our games, or if our games contain defects or objectionable content, our business, financial condition, results of operations, or reputation could be harmed.

We believe that establishing and maintaining our awareness of our games is critical to developing and maintaining favorable relationships with players, platform providers, advertisers, and content licensors, as well as competing for key management and technical talent. Increasing awareness and recognition of our games is particularly important in connection with our strategic focus on developing games based on our own intellectual property and successfully cross-promoting our games. In addition, globalizing and extending awareness and recognition of our games require significant investment and extensive management time to execute successfully. Although we make significant sales and marketing expenditures in connection with the launch of our games, these efforts may not succeed in increasing awareness of our existing or new games. In addition, if a game contains objectionable content or the messaging functionality of our games is abused, our

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reputation could be damaged. Despite reasonable precautions, some consumers may be offended by certain of our game content or by treatment of other players. If consumers believe that a game we published contains objectionable content, consumers could refuse to play it and could pressure the platform providers to remove the game from their platforms. Further, if we fail to increase and maintain awareness and consumer recognition of our games, our potential revenues could be limited, our costs could increase, and our business, financial condition, results of operations, or reputation could suffer.

Our applications enable us to track certain performance metrics with internal and third-party tools and we do not independently verify such metrics. Certain of our performance metrics are subject to inherent challenges in measurement, and real or perceived inaccuracies in such metrics may harm our reputation and adversely affect our business.

We track certain performance metrics, including the number of active and paying players of our games. Our all-in-one app strategy, in particular, provides us with large amounts of data on users and participation rates, among other things. Our performance metrics tools have a number of limitations and our methodologies for tracking these metrics may change over time, which could result in unexpected changes to our metrics, including the metrics we report. If the internal or third-party tools we use to track these metrics undercount or overcount performance or contain algorithm or other technical errors, the data we report may not be accurate. In addition, limitations or errors with respect to how we measure data (or the data that we measure) may affect our understanding of certain details of our business, which could affect our longer-term strategies.

Furthermore, our performance metrics may be perceived as unreliable or inaccurate by players, analysts, or business partners. If our performance metrics are not accurate representations of our business, player base, or traffic levels, if we discover material inaccuracies in our metrics, or if the metrics do not provide an accurate measurement of our business, our reputation may be harmed and our business, prospects, financial condition, and results of operations could be materially and adversely affected.

We rely on information technology and other systems, and any failures in our systems or errors, defects, or disruptions in our games could diminish our reputation, subject us to liability, disrupt our business, and adversely impact our results.

We rely on information technology systems that are important to the operation of our business, some of which are managed by third parties. These third parties are typically under no obligation to renew agreements and there is no guarantee that we will be able to renew these agreements on commercially reasonable terms, or at all. These systems are used to process, transmit, and store electronic information, to manage and support our business operations, and to maintain internal control over our financial reporting. In addition, we collect and store certain data, including proprietary business information, and may have access to confidential or personal information in certain of our businesses that is subject to privacy and security laws, and regulations. We could encounter difficulties in developing new systems, maintaining and upgrading current systems, and preventing security breaches. Among other things, our systems are susceptible to damage, outages, disruptions, or shutdowns due to fire, floods, power loss, break-ins, cyber-attacks, network penetration, denial of service attacks, and similar events. Any failures in our computer systems or telecommunications services could affect our ability to operate our games or otherwise conduct business.

Portions of our information technology infrastructure, including those operated by third parties, may experience interruptions, delays or cessations of service or produce errors in connection with systems integration or migration work that takes place from time to time. We may not be successful in implementing new systems and transitioning data, which could cause business disruptions and be more expensive, time-consuming, disruptive, and resource-intensive. We have no control over third parties that provide services to us and those parties could suffer problems or make decisions adverse to our business. We have contingency plans

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in place to prevent or mitigate the impact of these events. However, such disruptions could materially and adversely impact our ability to deliver games to players and interrupt other processes. If our information systems do not allow us to transmit accurate information, even for a short period of time, to key decision-makers, the ability to manage our business could be disrupted and our results of operations, cash flows, and financial condition could be materially and adversely affected. Failure to properly or adequately address these issues could impact our ability to perform necessary business operations, which could materially and adversely affect our reputation, competitive position, results of operations, cash flows, and financial condition.

Substantially all of our games rely on data transferred over the internet, including wireless internet. Access to the internet in a timely fashion is necessary to provide a satisfactory player experience to the players of our games. Third parties, such as telecommunications companies, could prevent access to the internet or limit the speed of our data transmissions, with or without reason, causing an adverse impact on our player experience that may materially and adversely affect our reputation, competitive position, results of operations, cash flows, and financial condition. In addition, telecommunications companies may implement certain measures, such as increased cost or restrictions based on the type or amount of data transmitted, that would impact consumers’ ability to access our games, which could materially and adversely affect our reputation, competitive position, results of operations, cash flows, and financial condition. Furthermore, internet penetration may be adversely affected by difficult global economic conditions or the cancellation of government programs to expand broadband access.

Our games and other software applications and systems, and the third-party platforms upon which they are made available, could contain undetected errors.

Our games and other software applications and systems, as well as the third-party platforms upon which they are made available, could contain undetected errors, bugs, flaws, corrupted data, defects, and other vulnerabilities that could adversely affect the performance of our games. For example, these errors could prevent the player from making in-app purchases of virtual chips, which could harm our operating results. They could also harm the overall game-playing experience for our players, which could cause players to reduce their playing time or in game purchases, discontinue playing our games altogether, or not recommend our games to other players. Such errors could also result in our games being non-compliant with applicable laws or create legal liability for us.

Some of these errors may only become apparent after a game is launched, particularly as we often launch new content and release new features to existing games under tight time constraints. Any such errors may be exploited by cheating programs and other forms of misappropriation, disrupt our operations, adversely affect the gaming experience of our players, harm our reputation, cause our players to stop playing our games, divert our resources, and delay market acceptance of our games, any of which could result in legal liability to us or harm our business, financial condition, or results of operations.

We may use open source software in a manner that could be harmful to our business.

We use open source software in connection with our technology and games on a limited basis. The original developers of the open source code provide no warranties on such code. Moreover, some open source software licenses require players who distribute open source software as part of their proprietary software to publicly disclose all or part of the source code to such software and/or make available any derivative works of the open source code on unfavorable terms or at no cost. We try to use open source software in a manner that will not require the disclosure of the source code to our proprietary software or prevent us from charging fees to our players for use of our proprietary software. However, we cannot guarantee that these efforts will be successful, and thus, there is a risk that the use of such open source code may ultimately preclude us from charging fees for the use of certain software, require us to replace certain code used in our games, pay a royalty to use some open source code, make the source code of our games publicly available, or discontinue certain games. Our

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results of operations, cash flows, and financial condition could be adversely affected by any of the above requirements.

Our inability to complete potential acquisition opportunities and integrate those businesses successfully could limit our growth or disrupt our plans and operations.

In the future, we may pursue additional strategic acquisitions to further expand our operations. Our ability to succeed in implementing our strategy will depend to some degree upon our ability to identify and complete commercially viable acquisitions. We cannot assure that acquisition opportunities will be available on acceptable terms, or at all, or that we will be able to obtain necessary financing or regulatory approvals to complete potential acquisitions.

We may not be able to successfully integrate any businesses that we acquire or do so within the intended timeframes. We could face significant challenges in managing and integrating our acquisitions and our combined operations, including acquired assets, operations, and personnel. In addition, the expected cost synergies associated with such acquisitions may not be fully realized in the anticipated amounts or within the contemplated timeframes or cost expectations, which could result in increased costs and have an adverse effect on our prospects, results of operations, cash flows, and financial condition.

Our business may be adversely impacted by reductions in discretionary consumer spending as a result of downturns in the economy, global pandemics, or other factors beyond our control.

Consumer demand for entertainment and social casino games, such as ours, is sensitive to downturns in the economy and the corresponding impact on discretionary spending on leisure activities. Changes in discretionary consumer spending or consumer preferences brought about by factors such as perceived or actual general economic conditions, effects of declines in consumer confidence in the economy, public health concerns or pandemics, such as the COVID-19 coronavirus, the impact of high energy and food costs, the increased cost of travel, decreased disposable consumer income and wealth, political and regulatory uncertainty, or fears of war and future acts of terrorism could further reduce customer demand for the games that we offer and the amounts, if any, our players are willing to spend. These factors could impose practical limits on pricing and negatively impact our results of operations and financial condition.

With respect to COVID-19, we have followed guidance by the Korean government and the state government in Washington to protect our employees and our operations during the pandemic and have effectively implemented a remote environment for our business. To date, we have not incurred any interruptions in operations. We continuously monitor performance and other industry reports to assess the risk of future negative impacts should the disruption of the economy progress.

The online gaming industry, in particular, has been identified in industry and media reports, such as Eilers & Krejcik and AppsFlyer, as an unintended beneficiary of this pandemic as people are quarantined in their homes, and we are not an exception to this benefit. Our monthly revenue benefited from the effects of the pandemic, particularly in those months when stay-at-home orders and quarantines were broadly imposed across the United States. However, we expect such benefit to decrease as vaccinations become more widely available and restrictions are eased. Consequently, any change resulting in a diversion of player discretionary income to other uses, including for essential items, could adversely impact our cash flows, operating results, and financial condition. See “Management’s discussion and analysis of financial condition and results of operations—Recent developments.”

We rely on skilled employees with creative and technical backgrounds.

We rely on our highly skilled, technically trained, and creative employees to develop new technologies and create innovative games. Such employees, particularly game designers, engineers, and project managers with desirable

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skill sets are in high demand, and we devote significant resources to identifying, hiring, training, successfully integrating, and retaining these individuals. A lack of skilled technical workers could delay or negatively impact our business plans, ability to compete, results of operations, cash flows, and financial condition.

Our results of operations, cash flows, and financial condition could be affected by natural events in the locations in which we or our key platform providers or content suppliers operate.

We may be impacted by severe weather and other geological events, including hurricanes, earthquakes, floods or tsunamis that could disrupt our operations or the operations of our key platform providers or content suppliers. Natural disasters or other disruptions at any of our facilities, those of our key providers, such as Apple, Google, Facebook, and Amazon, or those of our content suppliers, may impair the operation, development or provision of our games. While we insure against certain business interruption risks, we cannot assure that such insurance will compensate us for any losses incurred as a result of natural or other disasters. Any serious disruption to our operations, or those of our key providers or suppliers could have a material adverse effect on our results of operations, cash flows, and financial condition.

Our results of operations fluctuate due to seasonality and other factors and, therefore, our periodic operating results are not guarantees of future performance.

Our results of operations can fluctuate due to seasonal trends and other factors. Player activity is generally slower in the second and third quarters of the year, particularly during the summer months. Certain other seasonal trends and factors that may cause our results to fluctuate include:

Consequently, results for any quarter are not necessarily indicative of the results that may be achieved in another quarter or for the full fiscal year. We cannot assure that the seasonal trends and other factors that have impacted our historical results will repeat in future periods as we do not have the ability to influence these factors.

We are subject to a variety of laws worldwide, many of which are still untested and still developing and which could subject us to further extensive governmental regulation, claims, or otherwise, as well as federal, state, and local laws affecting business in general, which may harm or restrict our business.

We are subject to a variety of laws in the United States, Korea, and other jurisdictions, including laws regarding consumer protection, intellectual property, virtual items and currency, export, and national security, all of which are continuously evolving and developing. The scope and interpretation of the laws that are or may be applicable to us are often uncertain and may be conflicting, particularly laws outside of Korea and the United States. It is also likely that as our business grows and evolves and our games are played in larger volume in a greater number of countries, we will become subject to laws and regulations in additional jurisdictions. If we are not able to comply with these laws or regulations or if we become liable under these laws or regulations, we could be directly harmed, and we may be forced to implement new measures to reduce our exposure to this liability. This may require us to expend substantial resources, modify our games, or block users from a particular jurisdiction, each of which would harm our business, financial condition, and results of operations. In addition, the increased attention focused upon liability issues as a result of lawsuits and legislative proposals could harm our reputation or otherwise impact the growth of our business. Any costs incurred as a result of this potential liability could harm our business and operating results.

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It is possible that a number of laws and regulations may be adopted or construed to apply to us in the United States, Korea, and elsewhere that could restrict the online and mobile industries, including player privacy, advertising, taxation, gaming, copyright, distribution, and antitrust. Our ability to access potentially key markets in the future, such as Korea and China, which currently restrict or otherwise limit entry for social casino gaming companies, will be dependent in part upon changes to the current legal and regulatory environment.

Furthermore, the growth and development of electronic commerce, social gaming, and virtual items and currency may lead to more stringent consumer protection laws that may impose additional burdens on or limitations on operations of companies such as ours conducting business through the internet and mobile devices. If scrutiny and regulation of our industry increases, we will be required to devote additional legal and other resources to addressing such regulation. Such new compliance costs or jurisdictional restrictions on our ability to offer online games could have a material adverse effect on our business, financial condition, and operating results. See “Our business—Regulation of the industry.”

Changes in tax laws or tax rulings, or the examination of our tax positions, could materially affect our financial condition and results of operations.

Tax laws are dynamic and subject to change as new laws are passed and new interpretations of the law are issued or applied. In 2017, the United States enacted comprehensive tax legislation that includes significant changes to the taxation of business entities. These changes include, among others: (i) a permanent reduction to the corporate income tax rate, (ii) a partial limitation on the deductibility of business interest expense, (iii) a shift of the U.S. taxation of multinational corporations from a tax on worldwide income to a territorial system (along with certain rules designed to prevent erosion of the U.S. income tax base), and (iv) a one-time tax on accumulated offshore earnings held in cash and cash equivalents and illiquid assets, with the latter taxed at a lower rate. Because these tax law changes are relatively new, we are still evaluating the impact that they may have on our business and results of operations in the future. Although at this time we do not expect that the changes will have an overall significant adverse impact on our business and financial condition, we cannot assure you that our business and results of operations will not be adversely affected by these or other changes to tax laws.

Our existing corporate structure and intercompany arrangements have been implemented in a manner we believe is in compliance with current prevailing tax laws and related regulatory guidance. However, the tax benefits that we intend to eventually derive could be undermined due to changing tax laws. In addition, the taxing authorities in Korea and the United States regularly examine income and other tax returns and we expect that they may examine our income and other tax returns. The ultimate outcome of these examinations cannot be predicted with certainty.

There can be no assurance that we will not be classified as a passive foreign investment company, which could result in adverse U.S. federal income tax consequences to United States Holders of our ordinary shares.

A non-U.S. corporation is classified as a passive foreign investment company (“PFIC”) for any taxable year in which, after applying relevant look-through rules with respect to the income and assets of its subsidiaries, either: (i) 50% or more of the value of the corporation’s assets either produce passive income or are held for the production of passive income, based on the quarterly average of the fair market value of such assets; or (ii) at least 75% of the corporation’s gross income is passive income. For purposes of the asset test, any cash and cash equivalents (such as bank deposits) will count as passive assets, and goodwill should be treated as an active asset to the extent that it is associated with activities that produce or are intended to produce active income. “Passive income” generally includes, for example, dividends, interest, certain rents and royalties, certain gains from the sale of stock and securities, and certain gains from commodities transactions.

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Based upon our current and projected income and assets and the valuation of our assets, including goodwill, we do not expect to be a PFIC for our current taxable year or the foreseeable future. However, the determination of whether any corporation was, or will be, a PFIC for a taxable year depends, in part, on the application of complex U.S. federal income tax rules, which are subject to differing interpretations. In addition, because the determination of whether a corporation will be a PFIC for any taxable year can only be made after the close of such taxable year, there can be no assurance that we will not be a PFIC for our current taxable year or any future taxable year. Furthermore, because we have valued our goodwill based on the expected market price of the ADSs in this offering, a decrease in the market price of our ADSs may also cause us to be classified as a PFIC for the current or any future taxable year.

If we are a PFIC for any year during which you hold the common shares or ADSs, then U.S. investors could be subject to adverse U.S. federal income tax consequences (regardless of whether we continue to be a PFIC), including increased tax liability on disposition gains and certain “excess distributions” and additional reporting requirements. See “U.S. federal income tax considerations for U.S. holders– Passive foreign investment company considerations” for further information. U.S. investors should consult their tax advisers regarding our PFIC status for any taxable year and the potential application of the PFIC rules to an investment in our common shares or ADSs, including the availability and the advisability of making certain elections under the PFIC rules.

We may be subject to additional tax liabilities in connection with our operations or due to future legislation, which may include a “global minimum tax,” each of which could materially impact our financial position and results of operation.

We are subject to federal and state income, sales, use, value added, and other taxes in Korea, the United States and other countries in which we conduct business and such laws and rates vary by jurisdictions. In recent years, non-U.S. jurisdictions have imposed or proposed digital services taxes, including in connection with the Organisation for Economic Co-Operation and Development’s (OECD) Base Erosion and Profit Shifting (BEPS) Project. In addition, there is growing international support for a so-called “global minimum tax” applicable to certain companies that, if enacted, could apply to us. These taxes, whether imposed unilaterally by non-U.S. jurisdictions or in response to multilateral measures (e.g., the BEPS Project), could result in taxation of companies that have customers in a particular jurisdiction but do not operate there through a permanent establishment. Changes to tax law or administration such as these, whether at the state level or the international level, could increase our tax administrative costs and tax risk, and negatively affect our overall business, results of operations, financial condition and cash flows. We are currently unable to predict whether such changes will occur and, if so, the ultimate impact on our business.

Our insurance may not provide adequate levels of coverage against claims.

We believe that we maintain insurance customary for businesses of our size and type. However, there are types of losses we may incur that cannot be insured against or that we believe are not economically reasonable to insure. Moreover, any loss incurred could exceed policy limits and policy payments made to us may not be made on a timely basis. Such losses could adversely affect our business prospects, results of operations, cash flows and financial condition.

Risks related to doing business in Korea

Escalations in tensions with North Korea could have a material adverse effect on our business, prospects, financial condition, and results of operations, and the market value of our ADSs.

We are incorporated in Korea and certain of our operations are located in Korea. As a result, we are subject to geopolitical uncertainties and risks involving Korea and North Korea.

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Relations between Korea and North Korea have been tense throughout Korea’s modern history. The level of tension between the two Koreas has fluctuated over the years and may increase or change abruptly as a result of current and future events. In particular, there have been heightened security concerns in recent years stemming from North Korea’s nuclear weapons and ballistic missile programs as well as its hostile military actions against Korea. For example, North Korea renounced its obligations under the Nuclear Non-Proliferation Treaty in January 2003 and has conducted several rounds of nuclear tests since October 2006, including claimed detonations of hydrogen bombs, which are more powerful than plutonium bombs, and warheads that can be mounted on ballistic missiles. Over the years, North Korea has also conducted a series of ballistic missile tests, including missiles launched from submarines and intercontinental ballistic missiles that it claims can reach the United States mainland. In response, the Korean government has repeatedly condemned the provocations and flagrant violations of relevant United Nations Security Council resolutions. In February 2016, the Korean government also closed the inter-Korea Gaesong Industrial Complex in response to North Korea’s fourth nuclear test in January 2016. Internationally, the United Nations Security Council has passed a series of resolutions condemning North Korea’s actions and significantly expanding the scope of sanctions applicable to North Korea, most recently in December 2017 in response to North Korea’s intercontinental ballistic missile test in November 2017. Over the years, the United States and the European Union have also expanded their sanctions applicable to North Korea.

North Korea’s economy also faces severe challenges, which may further aggravate social and political pressures within North Korea. In recent years, a series of bilateral summit meetings were held between Korea and North Korea in April, May, and September 2018 and between the United States and North Korea in June 2018 and February and June 2019. The United States-North Korea meeting in February 2019 ended abruptly and without an agreement after the United States refused to lift sanctions until North Korea relinquished all of its nuclear weapons. In June 2019, the United States and North Korea had another one-day summit at the Korean Demilitarized Zone, following which both sides announced a resumption of denuclearization talks. However, North Korea has since resumed its missile testing, heightening tensions, and the outlook of such discussions remains uncertain.

Further tensions in North Korean relations may develop due to events such as North Korea’s leadership crisis, breakdown in high-level inter-Korea contacts, or any military hostilities. Alternatively, tensions may be resolved through reconciliatory efforts, which include peace talks, alleviation of sanctions, or reunification. There can be no assurance that future negotiations will result in a final agreement on North Korea’s nuclear program, including critical details such as implementation and timing, or that the level of tensions between Korea and North Korea will not escalate. Any increase in tensions, an outbreak in military hostilities or other actions or occurrences, could have a material adverse effect on the Korean economy and on our business, prospects, financial condition, and results of operations and could lead to a decline in the market value of our ADSs.

It may not be possible for investors to enforce U.S. judgments against us.

Our headquarters facility is located in Seoul, Korea. In addition, two of our directors are non-residents of the United States, and all or a substantial portion of the assets of these non-residents are located outside the United States. As a result, it may be difficult for U.S. investors to serve process within the United States upon us (other than our subsidiaries) or our directors and officers or to enforce a judgment against us for civil liabilities in U.S. courts. In addition, you should not assume that courts in Korea (i) would enforce judgments of U.S. courts obtained in actions against us or our subsidiaries based upon the civil liability provisions of applicable U.S. federal and state securities laws or (ii) would enforce, in original actions, liabilities against us or our subsidiaries based on those laws.

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Risks related to our relationship with DoubleU Games

As a foreign private issuer, we intend to follow “home country” practice even though we may be considered a “controlled company” under NASDAQ corporate governance rules since DoubleU Games will continue to be our majority shareholder after the offering and will have voting control over key decisions affecting our Company and our shareholders.

After the consummation of the offering, DoubleU Games will hold approximately 60.5% of our shares, and approximately 67.0% of our shares, if STIC sells to DoubleU Games all of the common shares under the DUG Private Purchase Agreement. See “Certain relationships and related party transactions—Joint Investment Agreement.” We have not entered into any voting agreement with DoubleU Games with respect to its voting of our shares in the future. Consequently, DoubleU Games, as our major shareholder, will be able to exercise voting control over most decisions upon which shareholders are entitled to vote.

As a result, we will be a “controlled company” within the meaning of the NASDAQ corporate governance rules. Under the NASDAQ rules, a company of which more than 50% of the voting power is held by an individual, group, or another company, is a “controlled company” and may elect not to comply with certain NASDAQ corporate governance standards, including the requirements that:

However, as a “foreign private issuer,” NASDAQ corporate governance rules allow us to follow our “home country,” Korea, rules and practice with respect to appointments to our board of directors and committees. We intend to follow home country practice as permitted by NASDAQ rather than rely on the “controlled company” exception to the corporate governance rules. Two members of our board of directors are considered “independent” under NASDAQ corporate governance rules, although we do intend to phase-in an additional independent director for our Audit Committee as permitted by NASDAQ.

The interests of DoubleU Games may differ significantly from those of our Board and our other shareholders. As a result, decisions by DoubleU Games could materially affect our continuing activities, including the sale of our Company to a third party or the ability of our shareholders to obtain a premium on any such sale or on a sale by DoubleU Games of all or part of its shareholding.

Our relationship with DoubleU Games could create potential conflicts of interest in management decisions, which could adversely impact our shareholders.

Although we have substantial contractual arrangements with our controlling shareholder, DoubleU Games, no person is serving concurrently as a director of both companies. Consequently, we have not entered into any agreement intended to govern any conflicts of interest between the two companies. However, under the Korean Commercial Code, or KCC, if a company, such as DDI, intends to enter into any arrangement with any of its major shareholders, such as DUG, such company is required to disclose the intended arrangement to its board of directors and obtain a resolution from the board approving such arrangement. Such approval requires the consent of not less than two-thirds of the board members. Under the KCC, a person would constitute a company’s major shareholder if such person holds 10% or more of equity interests in such company (without taking into account any non-voting shares issued by the company) or makes de facto influence on such company’s key managerial decisions (such as

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appointment and removal of directors and statutory auditors). Accordingly, in order for the Company and DUG to enter into any arrangement, the Company must seek and obtain a resolution from its board of directors approving the intended arrangement. Given the current board structure, the Company’s board resolution would be adopted independently from DUG. To date, the Company and DUG have entered into certain license agreements and loan agreements, all of which have been approved by the Company’s board in accordance with the KCC.

Further, unlike U.S. corporate law, Korean law does not recognize the concept of the controlling shareholder’s fiduciary duty to a company or any of such company’s minority shareholders. Under the KCC, only such company’s directors owe a fiduciary duty to the company. However, to the extent such controlling shareholder provides any instruction to a director of such company and any action or inaction taken by such director based on such instruction is found to be in violation of law, such action or inaction taken by the director may be regarded as that taken by such controlling shareholder. In such a case, the controlling shareholder would be required to indemnify the company for any loss incurred as a result of such action or inaction.

We are subject to certain loan agreements with DoubleU Games that could impede our available working capital and adversely impact our business operations and growth strategy.

We entered into several loans with DoubleU Games as our lender in 2018 and 2019, and the aggregate principal amount of such outstanding loans, as of June 30, 2021, was KRW50 billion (US$44.2 million). These loans mature in 2024, subject to certain prepayment rights. Each loan has a fixed interest rate of 4.60% per annum, with a default interest rate of an additional 5.0% per annum. Interest accrues quarterly, commencing as of May 2019, and is due and payable in full upon maturity. Further, if we are unable to repay the loans at maturity in 2024, we may not be able to continue our operations if we are unable to secure additional financing or otherwise restructure the loans. Although these loans are unsecured, we could nonetheless be forced by DoubleU Games to liquidate our operations and dissolve. See “Management’s discussion and analysis of financial condition and results of operations—Liquidity and capital resources—Short-term and long-term borrowings.”

A significant portion of our intellectual property portfolio is subject to license agreements with DoubleU Games and our operations could be adversely affected by the amount of royalty payments we are required to make under the agreements.

We are subject to a number of licensing and research and development agreements with DoubleU Games. Prior to the consummation of the offering, DoubleU Games controlled approximately 67.7% of our shares and, following the consummation of the offering, will control approximately 60.5% (or approximately 67.0% if STIC sells to DoubleU Games all of the common shares under the DUG Private Purchase Agreement). See “Certain Relationships and Related party Transactions—Joint Investment Agreement”. DoubleU Games has granted us exclusive rights during the term of the agreements for development and distribution of social casino game titles and sequels in social online gaming. As of June 30, 2021, we license approximately 38 slot gaming intellectual property rights from DoubleU Games that are actively offered to end users through our games. We are obligated to pay royalties and license fees to DoubleU Games in connection with these rights. The agreement remains in effect until either DUG no longer holds an interest, directly or indirectly, in DDI, or DDI no longer holds an interest, directly or indirectly, in DDI-US. In such event, the agreement provides that the parties will mutually renegotiate the terms of the agreement. If the parties decide to terminate, it could materially adversely affect our ability to continue to use and exploit these rights and the associated gaming content we distribute through our channels. In such event, our business operations, including our revenues and profitability, could be materially harmed unless and until we are able to create or acquire new revenue streams of comparable financial impact. In addition, our reputation would suffer from the loss of this content and we could lose all or a substantial portion of our players for an indefinite period.

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Risks related to this offering and ownership of our common shares and ADSs

We are an “emerging growth company” and, as a result of the reduced disclosure and governance requirements applicable to emerging growth companies, our common shares and ADSs may be less attractive to investors.

We are an “emerging growth company,” as defined in the JOBS Act, and we are eligible to take advantage of certain exemptions from various reporting requirements applicable to other public companies but not to emerging growth companies, including, but not limited to, a requirement to present only two years of audited financial statements in the registration statement for the emerging growth company’s initial public offering of common equity securities, an exemption from the auditor attestation requirement of Section 404 of the Sarbanes-Oxley Act, reduced disclosure about executive compensation arrangements pursuant to the rules applicable to smaller reporting companies, no requirement to seek non-binding advisory votes on executive compensation or golden parachute arrangements, and not being required to comply with any requirement that may be adopted by the Public Company Accounting Oversight Board regarding a supplement to the auditor’s report providing additional information about the audit and the financial statements. We have elected to adopt these reduced disclosure requirements.

Section 102(b)(1) of the JOBS Act exempts emerging growth companies from being required to comply with new or revised financial accounting standards until private companies (that is, those that have not had a registration statement declared effective under the Securities Act of 1933, as amended (the “Securities Act”) or do not have a class of securities registered under the Securities Exchange Act of 1934, as amended (which we refer to as the “Exchange Act”)) are required to comply with the new or revised financial accounting standards. In addition, Section 107 of the JOBS Act provides that an “emerging growth company” can take advantage of the extended transition period provided in Section 7(a)(2)(B) of the Securities Act for complying with new or revised financial accounting standards. An emerging growth company can, therefore, delay the adoption of certain accounting standards until those standards would otherwise apply to private companies. We have elected to use the extended transition period for complying with new or revised accounting standards under Section 102(b)(2) of the JOBS Act. This election allows us to delay the adoption of new or revised accounting standards that have different effective dates for public and private companies until those standards apply to private companies. As a result, our financial statements may not be comparable to companies that comply with public company effective dates.

We would cease to be an “emerging growth company” upon the earliest of (i) the last day of the fiscal year following the fifth anniversary of this offering, (ii) the last day of the fiscal year during which our annual gross revenues are $1.07 billion or more, (iii) the date on which we have, during the previous three-year period, issued more than $1.0 billion in non-convertible debt securities, or (iv) as of the end of any fiscal year in which the market value of our common shares held by non-affiliates exceeded $700 million as of the end of the second quarter of that fiscal year (and we have been a public reporting company for at least 12 months and have filed at least one annual report on Form 20-F).

We cannot predict if investors will find our ADSs less attractive as a result of our taking advantage of these exemptions. If some investors find our ADSs less attractive as a result of our choices, there may be a less active trading market for our ADSs and our stock price may be more volatile.

As a “foreign private issuer” we are permitted, and intend, to follow certain home country corporate governance and other practices instead of otherwise applicable SEC and stock exchange requirements, which may result in less protection than is accorded to investors under rules applicable to domestic U.S. issuers.

Our status as a foreign private issuer exempts us from compliance with certain SEC laws and regulations and certain regulations of NASDAQ, including certain governance requirements such as independent director oversight of the nomination of directors and executive compensation. Two members of our board of directors are considered “independent” under NASDAQ corporate governance rules, although we do intend to phase-in

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an additional independent director for our Audit Committee as permitted by NASDAQ. In addition, we are not required under the Exchange Act to file current reports and financial statements with the SEC as frequently or as promptly as U.S. domestic companies whose securities are registered under the Exchange Act and we are generally exempt from filing quarterly reports with the SEC. Also, we are not required to provide the same executive compensation disclosures regarding the annual compensation of our five most highly compensated senior executives on an individual basis as are required of U.S. domestic issuers. As a foreign private issuer, we are permitted to disclose executive compensation on an aggregate basis and need not supply a Compensation Discussion & Analysis, as is required for domestic companies. Furthermore, as a foreign private issuer, we are also not subject to the requirements of Regulation FD (Fair Disclosure) promulgated under the Exchange Act.

The requirements of being a public reporting company require significant resources and management attention and affect our ability to attract and retain executive management and qualified board members.

As a public reporting company, we incur legal, accounting, and other expenses that we did not previously incur as a private company. We are subject to the Exchange Act, including the reporting requirements thereunder, the Sarbanes-Oxley Act, the Dodd-Frank Wall Street Reform and Consumer Protection Act, the NASDAQ rules, and other applicable securities rules and regulations. Compliance with these rules and regulations has increased our legal and financial compliance costs, make some activities more difficult, time-consuming or costly, and increase demand on our systems and resources, particularly after we are no longer an “emerging growth company.” Further, these rules and regulations may make it more difficult and more expensive for us to obtain directors’ and officers’ liability insurance, which could make it more difficult for us to attract and retain qualified members of our board of directors.

Pursuant to Section 404 of the Sarbanes-Oxley Act, once we are no longer an emerging growth company, we may be required to furnish an attestation report on internal control over financial reporting issued by our independent registered public accounting firm. When our independent registered public accounting firm is required to undertake an assessment of our internal control over financial reporting, the cost of complying with Section 404 of the Sarbanes-Oxley Act will significantly increase, and management’s attention may be diverted from other business concerns, which could adversely affect our business and results of operations. We may need to hire more employees in the future or engage outside consultants to comply with the requirements of Section 404 of the Sarbanes-Oxley Act, which will further increase our cost and expense. In addition, enhanced legal and regulatory regimes and heightened standards relating to corporate governance and disclosure for public companies result in increased legal and financial compliance costs and make some activities more time-consuming.

As a result of disclosure of information in this prospectus and in filings required of a public reporting company, our business and financial condition has become more visible, which may result in threatened or actual litigation, including by competitors and other third parties. If such claims are successful, our business and operating results could be adversely affected, and even if the claims do not result in litigation or are resolved in our favor, these claims, and the time and resources necessary to resolve them, could divert the resources of our management and adversely affect our business and operating results.

If we fail to put in place appropriate and effective internal control over financial reporting and disclosure controls and procedures, we may suffer harm to our reputation and investor confidence level.

We are in the early stages of the process of designing, implementing, and testing our internal control over financial reporting, which process is time consuming, costly, and complex. If we fail to implement the requirements of Section 404(b) of the Sarbanes-Oxley Act in the required timeframe once we are no longer an emerging growth company, we may be subject to sanctions or investigations by regulatory authorities, including the SEC and NASDAQ. Furthermore, if we are unable to conclude that our internal control over

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financial reporting is effective, we could lose investor confidence in the accuracy and completeness of our financial reports, the market price of our ADSs could decline, and we could be subject to sanctions or investigations by regulatory authorities. Failure to implement or maintain effective internal control over financial reporting and disclosure controls and procedures required of public companies could also restrict our future access to the capital markets.

An active trading market for our ADSs may not develop or be sustained.

Prior to the completion of this offering, there has been no public market for our common shares or our ADSs. Although our ADSs will trade on the NASDAQ Stock Market under the symbol “DDI,” an active trading market for our ADSs may never develop or be sustained following this offering. If an active trading market does not develop or is not sustained, you may have difficulty selling your ADSs at an attractive price, or at all. An inactive market may also impair our ability to raise capital by selling our common shares or ADSs, and it may impair our ability to attract and motivate our employees through equity incentive awards and our ability to acquire other companies, products or technologies by using our common shares or ADSs as consideration.

The price of our ADSs may fluctuate substantially.

The price for our ADSs in this offering will be determined by us and the representative of the underwriters, and it may not be indicative of prices that will prevail in the open market following this offering. You may not be able to sell your ADSs at or above the initial public offering price or at any other price or at the time that you would like to sell. You should consider an investment in our ADSs to be risky, and you should invest in our ADSs only if you can withstand a total loss and wide fluctuations in the market value of your investment. Some factors that may cause the market price of our ADSs to fluctuate, in addition to the other risks mentioned in this section of the prospectus, are:

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These and other market and industry factors may cause the market price and demand for our ADSs to fluctuate substantially, regardless of our actual operating performance, which may limit or prevent investors from readily selling their ADSs and may otherwise negatively affect the liquidity of our ADSs. In addition, the stock market has experienced extreme price and volume fluctuations that have often been unrelated or disproportionate to the operating performance of these companies.

If you purchase ADSs in this offering, you will experience immediate dilution.

If you purchase ADSs in this offering, you will experience immediate dilution of $15.32 per ADS in the net tangible book value of your ADSs after giving effect to the offering at an initial public offering price of $18.00 per ADS because the price that you pay will be substantially greater than the net tangible book value per ADS that you acquire. For a further description of the dilution that you will experience immediately after this offering, see the section of this prospectus titled “Dilution.”

If securities or industry analysts do not publish research or publish inaccurate or unfavorable research about our business, the price of our ADSs and trading volume could decline.

The trading market for our ADSs depends in part on the research and reports that securities or industry analysts publish about us or our business. If few or no securities or industry analysts cover us, the trading price for our ADSs would be negatively impacted. If one or more of the analysts who covers us downgrades our ADSs, publishes incorrect or unfavorable research about our business, ceases coverage of our Company, or fails to publish reports on us regularly, demand for our ADSs could decrease, which could cause the price of our ADSs or trading volume to decline.

We do not currently intend to pay dividends on our common shares for the foreseeable future.

We currently do not intend to pay any dividends to holders of our common shares for the foreseeable future. We currently intend to invest our future earnings, if any, to fund our growth. Any determination to pay dividends in the future will be at the discretion of our board of directors and subject to limitations under applicable law. Therefore, you are not likely to receive any dividends on your ADSs for the foreseeable future, and the success of an investment in our ADSs will depend upon any future appreciation in its value. Moreover, any ability to pay dividends will be restricted by the terms of the current term loan and may be restricted by the terms of any future credit agreement or any future debt or preferred equity securities of us or our subsidiaries. Consequently, investors may need to sell all or part of their holdings of our common shares after price appreciation, which may never occur, as the only way to realize any future gains on their investment. There is no guarantee that our ADSs will appreciate in value or even maintain the price at which our shareholders have purchased our ADSs. Investors seeking cash dividends should not purchase our ADSs.

Holders of ADSs have fewer rights than shareholders under Korean law, and their voting rights are limited by the terms of the deposit agreement.

The rights of shareholders under Korean law to take actions, including voting their shares, receiving dividends and distributions, bringing derivative actions, examining our accounting books and records, and exercising appraisal rights, are available only to shareholders of record. Because the depositary, through its custodian agents, is the record holder of our common shares underlying the ADSs, only the depositary can exercise those rights under Korean law in connection with the deposited shares. ADS holders will not be able to bring a derivative action, examine our accounting books and records, or exercise appraisal rights through the depositary.

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Holders of ADSs may exercise their voting rights only in accordance with the provisions of the deposit agreement. Upon receipt of voting instructions from them in the manner set forth in the deposit agreement, the depositary will make efforts to vote the shares underlying the ADSs in accordance with the instructions of ADS holders. The depositary and its agents may not be able to send voting instructions to holders of ADSs or carry out their voting instructions in a timely manner. Furthermore, the depositary and its agents will not be responsible for any failure to carry out any instructions to vote, for the manner in which any vote is cast, or for the effect of any such vote. As a result, holders of ADSs may not be able to exercise their right to vote.

If Korea experiences certain economic, political or other events, the government may restrict holders of our ADSs and the depositary from converting and remitting dividends and other amounts in U.S. dollars.

Under the Korean Foreign Exchange Transaction Law, if the Korean government deems that certain emergency circumstances, including sudden fluctuations in interest rates or exchange rates, extreme difficulty in stabilizing the balance of payments or substantial disturbance in the Korean financial and capital markets, are likely to occur, it may impose any necessary restrictions as requiring Korean or foreign investors to obtain prior approval from the Minister of Economy and Finance of Korea for the acquisition of Korean securities or the repatriation of interest, dividends, or sales proceeds arising from disposition of such securities or other transactions involving foreign exchange.

We may be subject to securities class actions, which may harm our business and operating results.

Companies that have experienced volatility in the market price of their stock have been subject to securities class action litigation. We may be the target of this type of litigation in the future. Securities litigation against us could result in substantial costs and damages and divert management’s attention from other business concerns, which could seriously harm our business, results of operations, financial condition, or cash flows.

We may also be called on to defend ourselves against lawsuits relating to our business operations and/or the industry in which we operate. Some of these claims may seek significant damage amounts due to the nature of our business. Due to the inherent uncertainties of litigation, we cannot accurately predict the ultimate outcome of any such proceedings. A future unfavorable outcome in a legal proceeding could have an adverse impact on our business, financial condition, and results of operations. In addition, current and future litigation, regardless of its merits, could result in substantial legal fees, settlement or judgment costs, and a diversion of management’s attention and resources that are needed to successfully run our business.

We may amend the deposit agreement without consent from holders of ADSs and, if such holders disagree with our amendments, their choices will be limited to selling the ADSs or withdrawing the underlying common shares.

We may agree with the depositary to amend the deposit agreement without consent from holders of ADSs. If an amendment increases fees to be charged to ADS holders or prejudices a material right of ADS holders, it will not become effective until 30 days after the depositary notifies ADS holders of the amendment. At the time an amendment becomes effective, ADS holders are considered, by continuing to hold their ADSs, to have agreed to the amendment and to be bound by the amended deposit agreement. If holders of ADSs do not agree with an amendment to the deposit agreement, their choices will be limited to selling the ADSs or withdrawing the underlying common shares. No assurance can be given that a sale of ADSs could be made at a price satisfactory to the holder in such circumstances. See “Description of American Depositary Shares” for more information.

The right of holders of ADSs to participate in any future rights offerings may be limited, which may cause dilution to their holdings and holders of ADSs may not receive cash dividends if it is impractical to make them available to them.

We may, from time to time, distribute rights to our shareholders, including rights to acquire our securities. However, we cannot make any such rights available to our ADS holders in the United States unless we register

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such rights and the securities to which such rights relate under the Securities Act or an exemption from the registration requirements is available. In addition, the deposit agreement provides that the depositary bank will not make rights available to ADS holders unless the distribution to ADS holders of both the rights and any related securities are either registered under the Securities Act or exempted from registration under the Securities Act. We are under no obligation to file a registration statement with respect to any such rights or securities or to endeavor to cause such a registration statement to be declared effective. Moreover, we may not be able to establish an exemption from registration under the Securities Act. Accordingly, you may be unable to participate in our rights offerings in the future and may experience dilution in your holdings.

The depositary has agreed to pay ADS holders the cash dividends or other distributions it or the custodian receives on our common shares or other deposited securities after deducting its fees and expenses. However, because of these deductions, ADS holders may receive less, on a per share basis with respect to their ADS than they would if they owned the number of shares or other deposited securities directly. ADSs holders will receive these distributions in proportion to the number of common shares the ADSs represent. In addition, the depositary may, at its discretion, decide that it is not lawful or practical to make a distribution available to any holders of ADSs. For example, the depositary may determine that it is not practicable to distribute certain property through the mail or that the value of certain distributions may be less than the cost of mailing them. In these cases, the depositary may decide not to distribute such property and ADS holders will not receive such distribution.

Holders of ADSs may not receive distributions on our common shares or any value for them if it is illegal or impractical to make them available to such holders.

The depositary of our ADSs has agreed to pay holders of ADSs the cash dividends or other distributions it or the custodian for our ADSs receives on our common shares or other deposited securities after deducting its fees and expenses. Holders of ADSs will receive these distributions in proportion to the number of our common shares that such ADSs represent. However, the depositary is not responsible for making such payments or distributions if it is unlawful or impractical to make a distribution available to any holders of ADSs. For example, it would be unlawful to make a distribution to a holder of ADSs if it consists of securities that require registration under the Securities Act, but that are not properly registered or distributed pursuant to an applicable exemption from registration. The depositary is not responsible for making a distribution available to any holders of ADSs if any government approval or registration required for such distribution cannot be obtained after reasonable efforts made by the depositary. We have no obligation to take any other action to permit distributions on our common shares to holders of ADSs. This means that holders of ADSs may not receive the distributions we make on our common shares if it is illegal or impractical to make them available to such holders. These restrictions may materially reduce the value of our ADSs.

Holders of ADSs may be subject to limitations on transfer of their ADSs.

ADSs are transferable on the books of the depositary. However, the depositary may close its transfer books at any time or from time to time when it deems expedient in connection with the performance of its duties. In addition, the depositary may refuse to deliver, transfer, or register transfers of ADSs generally when our books or the books of the depositary are closed, or at any time if we or the depositary deems it advisable to do so because of any requirement of law or of any government or governmental body, or under any provision of the deposit agreement, or for any other reason.

ADS holders may not be entitled to a jury trial with respect to claims arising under the deposit agreement, which could result in less favorable outcomes to the plaintiff(s) in any such action.

The deposit agreement governing the ADSs representing our common shares provides that, to the fullest extent permitted by law, ADS holders waive the right to a jury trial for any claim they may have against us or the

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depositary arising out of or relating to our shares, the ADSs, or the deposit agreement, which may include any claim under the U.S. federal securities laws.

If we or the depositary were to oppose a jury trial based on this waiver, the court would have to determine whether the waiver was enforceable based on the facts and circumstances of the case in accordance with applicable state and federal law. To our knowledge, the enforceability of a contractual pre-dispute jury trial waiver in connection with claims arising under the federal securities laws has not been finally adjudicated by the United States Supreme Court. However, we believe that a contractual pre-dispute jury trial waiver provision is generally enforceable, including under the laws of the State of New York, which govern the deposit agreement, or by a federal or state court in the City of New York, which has jurisdiction over matters arising under the deposit agreement. In determining whether to enforce a contractual pre-dispute jury trial waiver, courts will generally consider whether a party knowingly, intelligently, and voluntarily waived the right to a jury trial. We believe that this would be the case with respect to the deposit agreement and the ADSs. It is advisable that you consult legal counsel regarding the jury waiver provision before investing in the ADSs.

If you or any other holders or beneficial owners of ADSs bring a claim against us or the depositary in connection with matters arising under the deposit agreement or the ADSs, including claims under federal securities laws, you or such other holder or beneficial owner may not be entitled to a jury trial with respect to such claims, which may have the effect of limiting and discouraging lawsuits against us or the depositary. If a lawsuit is brought against us or the depositary under the deposit agreement, it may be heard only by a judge or justice of the applicable trial court, which would be conducted according to different civil procedures and may result in different outcomes than a trial by jury would have, including outcomes that could be less favorable to the plaintiff(s) in any such action.

Nevertheless, if this jury trial waiver is not permitted by applicable law, an action could proceed under the terms of the deposit agreement with a jury trial. No condition, stipulation, or provision of the deposit agreement or the ADSs serves as a waiver by any holder or beneficial owner of ADSs or by us or the depositary of compliance with any substantive provision of the U.S. federal securities laws and the rules and regulations promulgated thereunder.

Dividend payments and the amount you may realize upon a sale of our common shares or ADSs that you hold will be affected by fluctuations in the exchange rate between the U.S. dollar and the Korean Won.

Cash dividends, if any, in respect of our common shares represented by our ADSs will be paid to the depositary in Korean Won and then converted by the depositary into U.S. dollars, subject to certain conditions. Accordingly, fluctuations in the exchange rate between the Korean Won and the U.S. dollar will affect, among other things, the amounts a holder of ADSs will receive from the depositary in respect of dividends, the U.S. dollar value of the proceeds that a holder of ADSs would receive upon sale in Korea of our common shares obtained upon surrender of ADSs, and the secondary market price of ADSs. Such fluctuations will also affect the U.S. dollar value of dividends and sales proceeds received by holders of our common shares.

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Use of proceeds

We expect to receive net proceeds from this offering of $86.5 million, after deducting the underwriting discounts and commissions and the estimated offering expenses in the aggregate of approximately $8.2 million payable by us.

We will not receive any proceeds from the sale of our ADSs by the selling shareholder in the event the underwriters’ overallotment option is exercised.

We intend to use the net proceeds from this offering for working capital and general corporate purposes, which may include potential payments that could result from resolution of pending legal proceedings.

We believe that our funds and the proceeds from this offering will be sufficient to continue our business and operations as currently conducted through 2022; however, changing circumstances may cause us to consume capital significantly faster than we currently anticipate. The amounts and timing of our actual expenditures will depend upon numerous factors, including the progress of our development and commercialization efforts, whether or not we enter into strategic collaborations or partnerships, and our general operating costs and expenditures.

We have no agreements or commitments for particular uses of the net proceeds from this offering, and our management may exercise discretion over the terms and timing of any future transaction in light of the changing needs of our business.

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Dividend policy

We currently intend to retain our future earnings, if any, to finance the development and expansion of our businesses and, therefore, do not intend to pay cash dividends on our common shares for the foreseeable future. Any future determination to pay dividends will be at the discretion of our board of directors and will depend on our financial condition, results of operations, capital requirements, restrictions contained in any financing instruments, and such other factors as our board of directors deems relevant in its sole discretion. See “Description of securities—Dividends.”

If we pay any dividends on our common shares, we will pay those dividends which are payable in respect of the common shares underlying our ADSs to the depositary, as the registered holder of such common shares, and the depositary then will pay such amounts to our ADS holders in proportion to the common shares underlying the ADSs held by such ADS holders, subject to the terms of the deposit agreement, including the fees and expenses payable thereunder. Cash dividends on our common shares, if any, will be paid in U.S. dollars. See “Description of American Depositary Shares.”

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Capitalization

The following table sets forth our capitalization as of June 30, 2021:

You should read the following table in conjunction with the sections titled “Use of proceeds,” “Selected consolidated financial information and operating data” and “Management’s discussion and analysis of financial condition and results of operations,” and our consolidated financial statements and related notes included elsewhere in this prospectus.

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Dilution

If you invest in the ADSs, you will experience immediate and substantial dilution to the extent of the difference between the initial public offering price per ADS paid by the purchasers of the ADSs and the pro forma net tangible book value per ADS immediately after, and giving effect to, the offering. Dilution results from the fact that the offering price per ADS is substantially in excess of the net tangible book value per ADS attributable to the existing shareholders for our presently outstanding shares.

Our historical net tangible book value per share is determined by dividing our total tangible assets, less total liabilities, by the actual number of outstanding common shares. The historical net tangible book value of our common shares as of June 30, 2021 was $46.5 million, or $20.98 per share.

The pro forma, net tangible book value as of June 30, 2021 was $132.9 million, or $53.65 per common share. The pro forma, net tangible book value gives effect to the above issuances and the sale of the ADSs in this offering at an initial public offering price of $18.00 per ADS, after deducting underwriting discounts and commissions and estimated offering expenses payable by us, as set forth in this prospectus. The pro forma net tangible book value per common share after the offering is calculated by dividing the pro forma, net tangible book value of $132.9 million by 2,477,672, which is equal to the pro forma, issued and outstanding common shares of the Company as of June 30, 2021. The difference between the initial public offering price and the pro forma net tangible book value per ADS represents an immediate increase in the net tangible book value of $1.63 per ADS to existing shareholders and immediate dilution of $15.32 per ADS to new investors purchasing ADSs in this offering.

The following table illustrates this dilution to new investors:

If the underwriters exercises in full their option to purchase additional ADSs, and based on an initial public offering price of $18.00 per ADS, the pro forma, as adjusted net tangible book value after this offering would be approximately $2.68 per ADS, the increase in the pro forma net tangible book value per ADS attributable to new investors would be approximately $1.63 per ADS and the dilution to new investors purchasing ADSs in this offering would be approximately $15.32 per ADS.

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The following table summarizes on the pro forma basis described above, as of June 30, 2021, the differences between the number of common shares underlying the ADSs purchased from us, the total consideration paid to us in cash and the average price per common share underlying the ADSs that existing stockholders and new investors paid. The calculation below is based on an initial public offering price of $18.00 per ADS, before deducting the estimated underwriting discount and estimated offering expenses payable by us.

Except as otherwise indicated, the above discussion and tables assume no exercise of the underwriters’ option to purchase additional ADSs. If the underwriters’ option to purchase additional ADSs were exercised in full, DUG would own 60.5%, STIC would own 24.8%, and the investors purchasing ADSs in this offering would own 14.7% of the total number of common shares outstanding immediately after completion of this offering.

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Selected consolidated financial information and operating data

The following sets forth our selected consolidated financial information and operating data as of and for each of the years ended December 31, 2020 and 2019, and the six months ended June 30, 2021 and 2020.

You should read the following selected consolidated financial information and operating data in conjunction with, and it is qualified in its entirety by reference to our audited consolidated financial statements and the related notes thereto for the years ended December 31, 2020 and 2019, our unaudited condensed consolidated financial statements and the related notes thereto for the six months ended June 30, 2021 and 2020, and the sections entitled “Capitalization” and “Management’s discussion and analysis of financial condition and results of operations,” which are included elsewhere in this prospectus.

Years ended December 31, 2020 and 2019

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Six months ended June 30, 2021 and 2020

Summary consolidated income statement data

(in millions)

Summary other data

(in millions, except ARPDAU and percentages)

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Reconciliation of non-GAAP measures

(in millions, except percentages)

Summary consolidated balance sheet data

(in millions)

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Management’s discussion and analysis of financial condition and results of operations

You should read the following in conjunction with the sections of this prospectus entitled “Cautionary note regarding forward-looking statements,” “Risk factors,” “Selected consolidated financial information and operating data,” and “Our business,” and the historical consolidated financial statements and the related notes thereto included elsewhere in this prospectus. This discussion contains forward-looking statements reflecting current expectations that involve risks and uncertainties. Actual results and the timing of events may differ materially from those contained in these forward-looking statements due to a number of factors, including those discussed in the section entitled “Risk factors” and elsewhere in this prospectus.

Our business

We are a leading developer and publisher of digital games on mobile and web-based platforms. We are the creators of multi-format interactive entertainment experiences for casual players. Our flagship game, DoubleDown Casino, has been in the top 20 grossing mobile games annually on Apple App Store since 2016, according to App Annie.

We have been an early pioneer in the social casino gaming segment and were among the initial publishers to launch a social casino game on the Facebook platform in 2010 with the release of DoubleDown Casino. As the market has shifted materially to mobile platforms in recent years, we have also embraced new distribution channels for our games, which has significantly expanded our overall reach and market opportunity. Our games attract players of social casino and casual games, and have been installed over 115 million times to date. During 2019 and 2020, an average of 2.8 million players and 2.9 million players, respectively, played our games each month, and for the six months ended June 30, 2021, an average of over 2.5 million players played our games each month. We believe that success in casual gaming requires a combination of creativity and data science to acquire, engage, and monetize players, and we have invested in our platform to build capabilities in game development and live game operations to capitalize on our opportunity.

All of our games are downloadable and playable for free on mobile platforms, and DoubleDown Casino is also available on web platforms. We designed our games to provide free virtual chips to players at various time intervals based on our players’ playing behaviors and patterns. We generate substantially all of our revenue from the sale of additional virtual chips, which players can choose to purchase at any time to enhance their playing experience. Our virtual chips cannot be withdrawn from the game, transferred from one game to another or from one player to another, or be redeemed for monetary value. We also generate a small portion of our revenue from our recently-launched subscription model, which allows subscribers to further enhance their gaming experience by gaining early access to new content and earning free virtual chips at a faster rate.

We have achieved consistent revenue growth and strong profitability. Our revenue was $358.3 million in 2020, up from $273.6 million in 2019. Our net income was $53.6 million in 2020, up from $36.3 million in 2019. Our Adjusted EBITDA was $120.3 million in 2020, up from $101.7 million in 2019. Our revenue was $189.9 million for the six months ended June 30, 2021, up from $175.1 million for the six months ended June 30, 2020. Our net income was $37.8 million for the six months ended June 30, 2021, up from $29.9 million for the six months ended June 30, 2020. Our Adjusted EBITDA was $64.2 million for the six months ended June 30, 2021, up from $61.6 million for the six months ended June 30, 2020, with an Adjusted EBITDA margin of 33.8% and 35.2%, respectively. See “Management’s discussion and analysis of financial condition and results of operations—Other key performance indicators and non-GAAP metrics and trends” below for a description of Adjusted EBITDA and for a reconciliation to net income, the most directly comparable financial measure calculated in accordance with U.S. GAAP.

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Recent developments

The global pandemic associated with COVID-19 has caused major disruption to all aspects of the global economy and societies in recent months, particularly as quarantine and stay-at-home orders have been imposed by all levels of government. We have followed guidance by the Korean government and the state government in Washington to protect our employees and our operations during the pandemic and have effectively implemented a remote environment for our business. To date, we have not incurred any interruptions in operations. We continuously monitor performance and other industry reports to assess the risk of future negative impacts should the disruption of the economy progress.

The online gaming industry, in particular, has been identified in industry and media reports, such as Eilers & Krejcik and AppsFlyer, as an unintended beneficiary of this pandemic as people are quarantined in their homes, and we are not an exception to this benefit. Our monthly revenue benefited from the effects of the pandemic, particularly in those months when stay-at-home orders and quarantines were broadly imposed across the United States. However, we expect such benefit to decrease as vaccinations become more widely available and restrictions are eased. Consequently, any change resulting in a diversion of player discretionary income to other uses, including for essential items, could adversely impact our cash flows, operating results, and financial condition.

Our history

We have a long and storied history in social casino and broader mobile gaming that reflects our decade-long leadership position in the industry. We were established in Seoul, Korea in 2008 as an independent interactive entertainment studio focusing on development and publishing of casual games and mobile applications. We were fully acquired by a leading social casino business, DUG, in 2017. DUG later acquired DDI-US through our Company, which has now become our primary operating subsidiary. DDI-US has achieved a number of key milestones since its founding in 2010.

$358.3 million Revenue (2020) $120.3 million Adj. EBITDA (2020) >5% Payer conversion (since 2019) Cumulative revenues($) Established DOI & Launched DOC on Facebook 1 million MAU 0.5 million DAU 4th most user recommended Facebook game Acquired by IGT & Launched DDC on Apple / Google Began introducing IGTs Land-based slot content & Top 20 gaming app launched loyally program on DDC Acquired by & Tech platform revamp Launched 2.9 million MAU 1.2 million DAU 115 million cumulative installs $2 billion+ cumulative revenue 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

$273.6 million Revenue (2019) $101.7 million Adj. EBITDA (2019) >5% Payer conversion Cumulative revenue ($) Established DDI & Launched DDC on Facebook 2010 1 million MAU 0.5 million DAU 4th most user recommended Facebook game 2011 Acquired by IGT & Launched DDC on Apple / Google 2012 Began introducing IGT’s land-based slot content & 50 million+ cumulative installs achieved in 2013 2013 2014 $1 billion+ cumulative revenue & Top 20 gaming app 2015 Launched Loyalty program on DDC 2016 Acquired by & Launched DoubleDown Classic, DoubleDown Fort Knox, and Ellen & Tech platform revamp 2017 2018 2.8 million MAU 1.2 million DAU 110 million cumulative installs $2 billion+ cumulative revenue & Launched 2019

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Our cohort dynamics

The success of our business model depends on our ability to acquire, retain and monetize players over time. We have a history of driving sustained monetization, or player spend, within our games. We measure this by tracking annual cohorts of players. We define an annual cohort as all of the game installs in a given year. We then track the total revenue amount of all players in each cohort over time. If a player installs a different game in two different years or the same game on two different devices, they may, in certain circumstances, be included in two different cohorts.

We believe that cohort behavior provides insight into the overall revenue retention dynamics of our business, reflecting our ability to convert players into paying players and drive monetization of our games over time. In 2020, 89% of our revenue was generated by installations prior to 2020 and our 2010 to 2019 cohorts experienced a 92% revenue retention in 2019, demonstrating our ability to consistently retain and monetize players. The chart below represents our quarterly gross player purchases by yearly installations subsequent to our acquisition by DUG in June 2017.

Our Stable and Predictable Revenue Driven by Our Ability to Retain and Monetize Players Over Time Revenue by user cohort

Our Stable and Predictable Income Driven by Our Ability to Retain and Monetize Players Over Time Revenue by user cohort 85% 1Q20 revenue generated by 2010 – 2018 cohorts (US$mm) $80 $70 $60 $50 $40 $30 $20 $10 $0 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 1Q 2Q 3Q 4Q 1Q 2Q 3Q 4Q 1Q 2018 2019 2020

Our marketing efficiency