DFC Intelligence recently filed a report from Enterbrain titled “The Secret of Gree & Mobage’s Success – How to succeed with in-App Purchase in the Mobile SNS Market.” In it, they detail the profiles of Japan’s major social network companies, many of which are enacting trends that are likely to influence the North American and European markets in the years to come.

The social game market in Japan is expected to increase from 211.7 billion yen (about $2.6 billion) in 2011 to a forecasted 270 billion yen (about $3.4 billion) in 2012. The majority of this revenue comes from free-to-play titles; using Japanese social mobile networks, Gree and Mobage attract more premium users than social networks like Facebook.

Get the full report at dfcint.com. {link no longer active}