One of the most popular open source game engines is Cocos2d-x, a cross-platform framework designed by Chukong Technologies and based on the Cocos2d engine for iOS. It works on a variety of platforms ...
Using a single C++ codebase you can deploy games to just about any mobile platform and since Cocos2d-x is open-source, you can tweak the game engine if needed. The Cocos2d API is simple and powerful.
According to Chukong Technologies, over half of the top grossing mobile games in the Chinese market are developed using Cocos 2d-x, its free, open-sourced middleware. It's a mark both of how it ...