JAMDAT Mobile - Japan Launches ``Geki! Puzzle Chudoku'' Through Japanese Mobile Operator KDDI; Popular Puzzle Games Make Wireless Debut in Japan

Business Wire, Nov 23, 2004

LOS ANGELES & TOKYO -- Global wireless entertainment publisher JAMDAT Mobile Inc. (NASDAQ:JMDT) announced today the launch of its first titles for Japanese Mobile Phone Operator KDDI (au). "Geki! Puzzle Chudoku" (English translation: Freak! Puzzle Addict) is now available through KDDI's EZ appli (BREW(TM)) service.

"Geki! Puzzle Chudoku" is a set of three popular puzzle titles -- "Collapse," "Bounce Out" and "Bejeweled" -- that became popular in online and PC formats.

"'Geki! Puzzle Chudoku' is the first product release for JAMDAT Mobile - Japan," said Toshi Iwata, President of JAMDAT Mobile - Japan. "Japan is an important market and we are pleased with our relationship with KDDI."

"The launch of JAMDAT Mobile - Japan's first titles is exciting," said Mitch Lasky, Chairman and CEO of JAMDAT Mobile Inc. "It is our strategy to publish high-quality content for consumers around the world through our international offices."

About JAMDAT Mobile

JAMDAT is a global publisher of wireless entertainment applications, including games, ring tones, images and other content. JAMDAT's application portfolio is based on original and licensed intellectual properties and includes JAMDAT Bowling, Lemonade Tycoon(TM), Bejeweled, The Lord of the Rings(R), Tony Hawk's(R) Underground and Scrabble(R). JAMDAT distributes its applications through wireless carriers, including AT&T Wireless, China Mobile, Cingular, 02 (UK), Nextel, KDDI, NTT DoCoMo, Orange, Sprint, Telefonica Moviles, T-Mobile, Verizon Wireless, Virgin Mobile, Vivo and Vodafone.

Safe Harbor Statement -- JAMDAT Mobile Inc.

This press release includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including statements related to anticipated revenues, expenses, earnings, operating cash flows, the outlook for JAMDAT's markets and the demand for its products. Factors that could cause JAMDAT's actual results to differ materially from these forward-looking statements include its ability to effectively market and sell products in diverse market segments, its reliance on a limited number of products and third-party vendors and distributors, its ability to expand studio operations, increases in fulfillment costs, disruptions to information technology systems, unpredictable events and circumstances relating to international suppliers, increased competition, government regulatory action and general economic conditions. Please refer to our reports and filings with the Securities and Exchange Commission, including our Registration Statement on Form S-1 related to our IPO and our recently filed Quarterly Report on Form 10-Q for the period ended September 30, 2004, for a further discussion of these risks and uncertainties. We also caution you not to place undue reliance on forward-looking statements, which speak only as of the date they are made. We undertake no obligation to update publicly any forward-looking statements to reflect new information, events or circumstances after the date they were made or to reflect the occurrence of unanticipated events.

(C) 2004 JAMDAT Mobile Inc. JAMDAT, JAMDAT Mobile and the bubbles logo are trademarks of JAMDAT Mobile Inc. All other trademarks are the property of their respective owners.