JAMDAT Mobile Brings id Software's Legendary DOOM to Mobile Phones with DOOM RPG; id Software's Legendary DOOM Gameplay - from t

Global wireless entertainment publisher JAMDAT Mobile
Inc. (NASDAQ:JMDT) announced today the launch of DOOM(R) RPG, an
exciting role-playing mobile game set in the DOOM universe. The game,
based on id Software's legendary game franchise, is available now on
wireless carriers throughout North America. DOOM RPG has been
co-developed by id Software and Fountainhead Entertainment.
   DOOM RPG is a new take on the world-renowned DOOM franchise. The
game preserves the look, feel and excitement of the original DOOM
game, while integrating a tactical, turn-based combat system for easy
to learn one-handed gaming. Crafted specifically for mobile phones,
DOOM RPG sends players to a secretive Martian research facility to
solve the mystery of a massive demonic invasion. DOOM RPG captivates
die-hard fans looking for a little bit of hell on-the-go while
introducing a whole new generation to the classic that started the
first-person gaming revolution.
   "The launch of DOOM RPG is a milestone in mobile gaming," said
Mitch Lasky, Chairman and CEO of JAMDAT Mobile Inc. "John Carmack and
the id Software team have created a game that delivers the same
thrilling gameplay synonymous with DOOM to mobile phones."
   "For over 10 years, DOOM has set the bar for action and innovation
on nearly every serious gaming platform released," said Todd
Hollenshead, CEO, id Software. "Now we're putting a little Hell in
your pocket with a new incarnation of DOOM designed and built
specifically to deliver all of the game's legendary action in an
inventive and easy to control turn-based RPG."
   DOOM RPG has already received rave reviews from a number of
influential gaming Web sites, including:

   WGWorld.com (rated 5 out of 5)

   "DOOM RPG is a huge game for mobile phones not just in size but in
meaning. For such an important franchise to make it onto a wireless
handset and be pulled off so exceptionally well, it speaks volumes as
to the quality of games that can be made."

   IGN Wireless (rated 9 out of 10)

   "DOOM RPG is a superbly playable mobile RPG. The game starts off
with a good, easy level for players to get acquainted with the set-up
and the general flow of game play, but wade a few levels deeper into
hell and the game spirals out of control -- but in the good way.
Monsters get brutish and aggressive, better weapons produce splashier
bloodstains, and the puzzles deeper. Never a dull moment. Like I said
above, although this is based on a game from 1993, DOOM RPG is a fresh
experience for mobile... Hugely recommended."

   DOOM RPG catapults wireless users into 10 levels of hellish
mayhem. Players confront 38 vicious enemies, including returning foes
such as Pinky Demon, Zombie and Imp, while finding secrets and
fulfilling tasks throughout the UAC research facility. With a brutal
arsenal of nine weapons, including old favorites like the Super
Shotgun and BFG, as well as cool weapons new to the DOOM universe,
players engage in first-person combat with more than eight hours of
action-packed gameplay. Gamers can also purchase stat boosters, such
as strength and accuracy, to customize their characters and replay
game levels to build up characters' abilities.
   DOOM and its sequels are among the most popular PC games ever,
with millions of copies sold. DOOM games are currently available for
the PC and multiple console systems.
   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(R), 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.

   About id Software

   id -- Freud's primal part of the human psyche and one of the
hottest game shops on Earth -- has been rocking the gaming world from
Mesquite, Texas since 1991. As a renowned leader in the industry, id
Software forged such frenetic titles as Wolfenstein 3D(R), DOOM(R),
DOOM II(R), QUAKE(R) QUAKE II(R), QUAKE III Arena(R), and Return to
Castle Wolfenstein(R). With intense graphics and mind-blowing action,
id's games have helped redefine the modern video game, continually
setting industry standards for technology and gameplay. And, in
keeping with tradition, id Software has amplified the world of
adrenaline pumping 3-D gaming with the release of their latest action
title, DOOM 3(R). id Software's advanced DOOM 3 engine is leading the
next revolution in 3-D interactive games. Check out more about id
Software at www.idsoftware.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. DOOM RPG is a trademark and DOOM and ID
are registered trademarks of id Software, Inc. in the United States
and/or some other countries. JAMDAT, JAMDAT Mobile and the bubbles
logo are trademarks of JAMDAT Mobile Inc.