Google announced Google Game Play Services (GPG) for iOS and Android about 2 days ago at Google I/O. The most important part for us is the ability to save game progress in Google Cloud and realtime Multiplayer game support. This brings Google upto mark with iOS GameCenter.
We just created a plugin for Unity for iOS and Android for GPG with following features
- Google Cloud Save
In coming weeks we shall add support for Android as well.
Multiplayer matchmaking will be a bit of work since state synch will have to be done from scratch just like it needs to be done for GameCenter. The Unity.Network would not be helpful in multiplayer without a Unity Raknet MasterServer.
The code is available as opensource at https://github.com/faizann/UnityGPGPlugin
Update June 16, 2013
The code now supports Android plugin as well.