UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of January, 2023

Commission File Number 001-39349

DoubleDown Interactive Co., Ltd.

(Translation of registrant’s name into English)

Joseph A. Sigrist, Chief Financial Officer

c/o DoubleDown Interactive, LLC

605 5^th Avenue, Suite 300

Seattle, WA 98104

+1-206-408-4545

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.  ☒ Form 20-F  ☐ Form 40-F

INFORMATION CONTAINED IN THIS FORM 6-K REPORT

Issuance of Press Release

On January 24, 2023, DoubleDown Interactive Co., Ltd. (the “Company”) issued a press release to announce that the Company will hold a conference call on Tuesday, February 7, 2023, at 5:00 p.m. Eastern Time (2:00 p.m. Pacific Time) to discuss its unaudited financial results for the fourth quarter and full year ended December 31, 2022.

A copy of the press release is being furnished in this report on Form 6-K as Exhibit 99.1 pursuant to General Instruction B to the Form 6-K and shall not be deemed to be “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section.

EXHIBIT INDEX

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Exhibit 99.1

DoubleDown Interactive Sets Fourth Quarter and Full Year 2022

Earnings Call for Tuesday, February 7 at 5:00 p.m. ET

SEATTLE, WASHINGTON – January 24, 2023 — DoubleDown Interactive (NASDAQ: DDI) (“DoubleDown” or the “Company”), a leading gaming company, delivering unique player experiences across a variety of genres, will hold a conference call on Tuesday, February 7, 2023 at 5:00 p.m. Eastern Time (2:00 p.m. Pacific Time) to discuss its results for the fourth quarter and full year ended December 31, 2022. Financial results will be issued in a press release prior to the call.

DoubleDown management will host a presentation, followed by a question-and-answer period.

To access the call, please use the following link: DoubleDown Fourth Quarter and Full Year 2022 Earnings Call. After registering, an email will be sent, including dial-in details and a unique conference call access code required to join the live call. To ensure you are connected prior to the beginning of the call, please register a minimum of 15 minutes before the start of the call.

A simultaneous webcast of the conference call will be available with the following link: DoubleDown Fourth Quarter and Full Year 2022 Webcast, or via the Investor Relations page of the DoubleDown website at ir.doubledowninteractive.com. For those not planning to ask a question on the conference call, the Company recommends listening via the webcast.

A replay will be available on the Company’s Investor Relations website shortly after the event.

About DoubleDown Interactive

DoubleDown Interactive, Co. Ltd. is 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, bringing authentic Vegas entertainment to players around the world through an online social casino experience. Our flagship title, DoubleDown Casino, has been a fan-favorite game on leading social and mobile platforms for years, entertaining millions of players worldwide with a lineup of classic and modern games.

Company Contact:

Joe Sigrist

ir@doubledown.com

+1 (206) 773-2266

Chief Financial Officer

https://www.doubledowninteractive.com

Investor Relations Contact:

Cody Slach or Jeff Grampp, CFA

Gateway Group

1-949-574-3860

DDI@gatewayir.com