TOKYO - November 9, 2012 - DeNA Co., Ltd. (TSE: 2432) and Yahoo Japan Corporation (Yahoo! JAPAN, TSE: 4689) today announced that they have agreed to expand their existing business alliance for PC-based social games in Japan to include offerings for smartphones and other smart devices.

Through strengthening their alliance, DeNA and Yahoo! JAPAN will expand the range of their collaboration from PCs to smartphones and tablets, thereby responding to the rapid spread of smart devices in Japan. In addition, the companies plan to interconnect user IDs and loyalty point systems of their respective services on smartphones to explore further opportunities.

Yahoo! Mobage, the PC-based social game platform jointly operated by DeNA and Yahoo! JAPAN, had its two year anniversary on October 7, 2012. Yahoo! Mobage has grown into one of Japan's largest PC-based social game platforms with more than 9 million registered users. The Yahoo! Mobage service is directly accessible from Yahoo! JAPAN, which currently has over 26 million active user IDs. The companies are also planning to continue their collaboration for Yahoo! Mobage, including joint development of PC games.