JAMDAT Mobile Launches JAMDAT Bowling 3D in South America on VIVO

Global wireless entertainment publisher JAMDAT Mobile
Inc. (NASDAQ: JMDT) announced today the launch of JAMDAT Bowling 3D in
South America at the 3G CDMA Americas Congress in Miami. JAMDAT
Bowling 3D is available on VIVO, the largest wireless carrier in South
America.
   JAMDAT Bowling 3D allows players to transform their mobile phones
into virtual bowling alleys with new, state-of-the-art 3D graphics.
The high-tech graphics engine enables gamers to see straight down the
lane and change camera views while they bowl. With a wide selection of
lanes, balls and pin colors and multiplayer options, JAMDAT Bowling 3D
may be the most realistic bowling experience outside the neighborhood
bowling alley.
   "JAMDAT Bowling 3D takes one of our most popular wireless titles -
JAMDAT Bowling - to a whole new level with an incredible 3D gameplay
experience, and we are thrilled to offer this game to wireless users
in South America," said Mitch Lasky, Chairman and CEO of JAMDAT Mobile
Inc. "This launch is part of our continuing effort to bring the latest
advancements in wireless gameplay to subscribers worldwide."

   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.

   ###

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