Cocos2d-x is an open-source mobile 2D game framework, released under MIT License. It is a C++ version of cocos2d-iphone project. Our focus for cocos2d-x development is around making cocos2d cross platform. On top of the framework provided by cocos2d-x, mobile games can be written in C++ or Lua, using API that is completely compatible with that of cocos2d-iphone. Cocos2d-x projects can easily be built and run on iOS, Android, Samsung Bada, BlackBerry Table OS and more. Cocos2d-x also supports Windows, Mac and Linux, therefore we can debug source code easily and write editors on desktop operating systems.
Cocos2d-x website, forums, tutorials and wiki: http://www.cocos2d-x.org/