Why choose Cocos2d-x
Why would you want to choose Cocos2d-x over other available game engines?
Modern C++ API (please refer to the modernizing done in version 3.0)
Cross-platform - desktop and mobile
Capability to test and debug your game on the desktop and then push it to a mobile or desktop target
A vast API of functionality including sprites, actions, animations, particles, transitions, timers, events (touch, keyboard, accelerometer, mouse), sound, file IO, persistence, skeletal animations, 3D