More tools for Android game developers

Google are adding more tools to Android game developers, such as:

• The open-source release of LiquidFun, a new C++ 2D physics library that makes it easier for developers to add realistic physics to their games.
• Google Play Games plug-in for Unity, cross-platform game engine from Unity Technologies. Game developers can now more easily integrate game services.
• New game categories are coming to the Play Store in February 2014, such as Simulation, Role Playing, and Educational.

source: Android Developers Blog