DeNA and Yahoo Japan announced an expansion of the Yahoo Mobage alliance to smartphones and tablets. The two companies started their collaboration on Yahoo Mobage in October 2010 and the platform now has 9 million registered users on PC.

“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,” said DeNA in a statement. “In addition, the companies plan to interconnect user IDs and loyalty point systems of their respective services on smartphones to explore further opportunities.”