TOKYO, JAPAN - November 22, 2012 - mixi, Inc. (TSE: 2121) and DeNA Co., Ltd. (TSE: 2432) today announced that they have agreed to form a business alliance. Under the agreement, the smartphone version of mixi Games, a game distribution service on mixi social network, and DeNA's Mobage social game network are scheduled to share the same game development platform.

Beginning January 2013, developers can create their games on a single development platform and distribute them to both social graphs in Japan without significant re-coding. The mixi and Mobage social graphs will remain separate.

The revamped mixi Games service with games created on the common development platform is scheduled to be available for consumers in the spring of 2013 and smartphone mixi users will be able to play an increased number of captivating social games. The mixi social network is accessed by more than eight million monthly active users via smartphones in Japan.