Google game services: Achievements, Cloud Save, Leaderboards for Android & iOS
android game services

At its I/O conference Google has announced Google Play game services which gives developers the tools to add achievements cloud saves, matchmaking, and leaderboards to games, not only on Android but iOS and the web. The service is integrated with Google+ for things such as leaderboards.  The development kit will be available to developers today and several titles have already implemented it including World of Goo.