Glu and Activision Announce Exclusive Worldwide Partnership to Bring Next Call of Duty Title to Mobile Phones

Under embargo until 12.30pm GMT, May 1st 2007

San Mateo, Calif. - May 1, 2007 - Glu Mobile Inc. (Nasdaq: GLUU), a leading global publisher of mobile games, today announced a strategic worldwide partnership with Activision, Inc., to develop an upcoming Call of Duty® title for mobile phones. Through this exclusive agreement, Glu will create a future title in the critically-acclaimed Call of Duty franchise, giving gamers around the world a way to experience Call of Duty directly on their mobile phones.

"We're thrilled to engage in an exclusive partnership with Activision and bring a new Call of Duty title to mobile gamers worldwide," said Greg Ballard, chief executive officer and president, Glu. "The Call of Duty franchise has brought new meaning and innovation to the first person action category and is a great addition to Glu's portfolio of award-winning games."

Today's announcement highlights Glu's superior studio capabilities and solid relationships with wireless carriers around the world that enable the company to deploy titles to a vast audience of consumers worldwide.

"Glu's well-earned reputation for publishing award-winning quality mobile games, and their proven ability to deploy titles globally made them a clear choice as our partner to bring the next Call of Duty to mobile gamers," said David Anderson, senior director of business development at Activision. "The mobile launch will give fans the ability to experience the thrilling action and heart-pounding intensity of Call of Duty, whenever and wherever they are."

The critically-acclaimed, blockbuster Call of Duty series is known for its cinematic intensity, epic battlefield moments and intense multiplayer action. The Glu mobile version will be available to consumers on major wireless carriers around the world later this year.

For more information, visit www.glu.com.

About Activision, Inc.

Headquartered in Santa Monica, California, Activision, Inc. is a leading worldwide developer, publisher and distributor of interactive entertainment and leisure products. Founded in 1979, Activision posted net revenues of $1.47 billion for the fiscal year ended March 31, 2006.

Activision maintains operations in the U.S., Canada, the United Kingdom, France, Germany, Italy, Japan, Australia, Scandinavia, Spain, the Netherlands and South Korea. More information about Activision and its products can be found on the company's World Wide Web site, which is located at www.activision.com.

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 Atari, Harrah's, Hasbro, Microsoft, PlayFirst, PopCap Games, SEGA and Sony. Founded in 2001, Glu is based in San Mateo, California and has offices in London, Hong Kong, France, Germany and Brazil. 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.

Forward Looking Statements

This press release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, including statements relating to the anticipated release dates for Glu's products. These forward-looking statements involve risks and uncertainties, as well as assumptions that if they do not fully materialize or prove incorrect, could cause our results to differ materially from those expressed or implied by such forward-looking statements. The risks and uncertainties that could cause our results to differ materially from those expressed or implied by such forward-looking statements include our inability to finish development of games and work with carriers and other third parties to introduce them in a timely and other risks and uncertainties described more fully in our documents filed with or furnished to the Securities and Exchange Commission. More information about these and other risks that may impact Glu's business are set forth in our Registration Statement on Form S-1 filed with the SEC, including the "Risk Factors" section in our final prospectus for Glu's initial public offering filed with the SEC under Rule 424(b)(4) (Registration No. 333-139493) dated March 22, 2007. All forward-looking statements in this press release are based on information available to us as of the date hereof. 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.

GLU MOBILE, GLU, SUPER K.O. BOXING, STRANDED, BRAIN GENIUS and the 'g' character logo are trademarks of Glu Mobile. All other names and trademarks are trademarks or registered trademarks of their respective owners.

® 2006 Activision Publishing, Inc. Activision and Call of Duty are registered trademarks of Activision Publishing, Inc. All rights reserved.