It seems that now is a good time to declare officially that Google+ is not an option for social game companies. The news that PopCap and Wooga are pulling their games from the platform is the final nail in the coffin. Given that they are not only stopping new development for Google + but have actually decided to sunset their existing titles on the platform shows it is not a viable business.
With only a few games on Google + (relative to Facebook), there is much less competition on the platform. This lack of competition, as well as the marketing Google has provided for marquee developers’ games, has given the big social game makers every opportunity to succeed. I do not see a path where other developers can succeed where PopcCap and Wooga failed, and must conclude that Google+ will never be a viable social game platform.
The Business of Social Games and Casino 