Glu/Activision deal

FOR IMMEDIATE RELEASE

San Mateo, Calif. – March 25, 2009 – Today at GDC, Glu Mobile Inc. (NASDAQ: GLUU), a leading global publisher of mobile games, announced an expanded partnership with Activision Publishing, Inc. (Nasdaq: ATVI) to bring five blockbuster Activision titles to the mobile platform. The upcoming titles will be published worldwide for carriers and application stores that support Android, Blackberry, BREW, J2ME and Windows Mobile.

“We are delighted to expand our relationship with Activision. Through our past relationship, we have already demonstrated Glu’s ability to bring superior quality mobile games to market that are true to the original console title,” said Jill Braff, senior vice president of global publishing, Glu. “We look forward to continuing our success with Activision as we roll out new mobile games based on some of the best-known franchises in the video game industry.”

“As a result of our successful partnership with Glu Mobile on the worldwide launch of Call of Duty®: World at War™, we know they are the right partner to help us bring quality and innovative game play to the mobile platform,” said Dave Anderson, Head of Business Development, Activision Publishing, Inc. “We are excited to work with them once again to bring several of our biggest holiday 2009 titles to mobile consumers around the world.”

For more information, visit http://www.glu.com. For live updates and sneak peeks, follow Glu on Twitter at www.twitter.com/glumobile or become a Glu Mobile fan on Facebook.

About Glu Mobile

Glu (NASDAQ:GLUU) is a leading global publisher of mobile games. Its portfolio of top-rated games includes original titles Super K.O. Boxing!, Stranded and Brain Genius, and titles based on major brands from partners including Atari, Activision, Konami, Harrah's, Hasbro, Warner Bros., Microsoft, PlayFirst, PopCap Games, SEGA and Sony. Founded in 2001, Glu is based in San Mateo, Calif. and has offices in London, France, Germany, Spain, Italy, Poland, Russia, China, Brazil, Chile, Canada and Mexico. Consumers can find high-quality, fresh entertainment created exclusively for their mobile phones wherever they see the 'g' character logo or at www.glu.com.

Cautions Regarding Forward-Looking Statements

This news release contains forward-looking statements, including our statement that we will bring 5 blockbuster Activision titles to the mobile platform; our statement that the 5 games will be published worldwide for carriers and application stores that support Android, Blackberry, BREW, J2ME and Windows Mobile; and our statement regarding our expectation of our continuing success with Activision as we roll out mobile versions of some of the best known franchises in the video game industry. These forward-looking statements are subject to material risks and uncertainties that could cause actual results to differ materially from those in the forward-looking statements. Investors should consider important risk factors, which include: the risk that Glu may fail to successfully execute on its business arrangement with Activision, Inc.; the risk that the 5 Activision titles may not be as successful with consumers as anticipated; the risk that the 5 Activision titles will not be released on the platforms currently anticipated; the risk that we may be unable to launch any or all of our expected 5 Activision titles on the schedule anticipated or at all; and other risks detailed under the caption “Risk Factors” in Glu’s most recent report on Form 10-K filed with the Securities and Exchange Commission on March 13, 2009. Glu is under no obligation, and expressly disclaims any obligation, to update or alter its forward-looking statements whether as a result of new information, future events or otherwise.

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GLU MOBILE, GLU, SUPER K.O. BOXING!, STRANDED, BRAIN GENIUS and the 'g' character logo are trademarks of Glu Mobile Inc.

Press Contacts:

Michaela Wilkinson

Dig Communications for Glu Mobile Inc.

415-233-4075

mwilkinson@digcommunications.com