Google is kicking off games services on its Play Store that allows developers to add achievements, social and public leaderboards, cloud saving, and real-time multiplayer. The games service goes live today and works completely on Android, and mostly on iOS or other "connected devices" – that second batch won't support multiplayer.

Google Play's games services differs from Apple's Game Center in that it offers backend support, rather than a standalone application.

Anyone making a game with Google Play has access to its developer services. A handful of games already have these services incorporated: World of Goo, Super Stickman Golf 2, Beach Buggy Blitz, Kingdom Rush, Eternity Warriors 2 and Osmos.
More...

--jeremy