JAMDAT Mobile to Provide Prizes for MONOPOLY (R) Best Chance Game 3.0 at McDonald's; Three Exciting JAMDAT Games Offered in Prom

Global wireless entertainment publisher JAMDAT Mobile
Inc. (NASDAQ:JMDT) announced today it is providing game prizes for
MONOPOLY(R) Best Chance Game 3.0 for the second consecutive year, now
available at participating McDonald's restaurants through November 15
or while supplies last. JAMDAT is providing the following wireless and
PC games as prizes:

   --  "JAMDAT SPORTS NBA Three-Point Shootout" (wireless)

   --  "Blue Blocks" (wireless)

   --  "Lemonade Tycoon 2" (PC)

   MONOPOLY Best Chance Game 3.0 offers consumers the familiar
McDonald's promotional game, plus an online version
(www.PlayatMcD.com) where consumers have a chance to win electronic
and downloadable prizes -- including JAMDAT wireless and PC games.
   "The McDonald's MONOPOLY Best Chance Game 3.0 will allow us to
reach a tremendous number of JAMDAT fans and new players alike," said
Mitch Lasky, Chairman and CEO of JAMDAT Mobile Inc. "Last year, a
significant number of new consumers selected a JAMDAT prize. We look
forward to another successful promotion and are pleased to offer
wireless blockbuster hits including 'JAMDAT SPORTS NBA Three-Point
Shootout' and 'Blue Blocks' as prizes."
   Game availability depends on individual phone model and wireless
carrier. For specific information, JAMDAT's Game Finder is available
at www.jamdat.com.

   About JAMDAT Mobile

   JAMDAT Mobile Inc. 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, Tetris(R),
Downtown Texas Hold 'Em, Lemonade Tycoon(R), Bejeweled, The Lord of
the Rings(R), Tony Hawk's(R) Underground and Scrabble(R). JAMDAT
distributes its applications through wireless carriers around the
world. For more information, please visit www.jamdat.com.

   Safe Harbor Statement -- JAMDAT Mobile Inc.

   This press release may include 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 integrate the acquisition of Blue Lava
Wireless, anticipated growth in the handset market, 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 JAMDAT's reports and
filings with the Securities and Exchange Commission for a further
discussion of these risks and uncertainties. Readers are cautioned not
to place undue reliance on forward-looking statements, which speak
only as of the date they are made. JAMDAT undertakes 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.

   About McDonald's

   McDonald's USA, LLC, is the leading foodservice provider in the
United States serving a variety of wholesome foods made from quality
ingredients to millions of customers every day. More than 80 percent
of McDonald's 13,700 U.S. restaurants are independently owned and
operated by local franchisees. For more information about McDonald's
visit www.mcdonalds.com.

   (C)2005 JAMDAT Mobile Inc. JAMDAT, JAMDAT Mobile and the bubbles
logo are trademarks of JAMDAT Mobile Inc.

   MONOPOLY TM, (R) & (C) 2005 Hasbro

   (C)2005 McDonald's