While competition is healthy, it could engulf the sector in a new platform war similar to the one currently gripping the smartphone industry where two players (Apple and Android) dominate and others are left fighting for the crumbs.

Initially it may force developers to choose one platform or the other - Facebook or Google+ - because of the game development costs, although the fact Google+ is courting developers with an initial 5% cut of in-game revenue. This is a clear ...