I prefer cocos2d-x. I used it for my music game (http://www.adhyet.com http://www.adhyet.com). Check out their Programming Guide (http://www.cocos2d-x.org/prog

I prefer cocos2d-x. I used it for my music game (http://www.adhyet.com http://www.adhyet.com). Check out their Programming Guide (http://www.cocos2d-x.org/programmersguide/1/index.html http://www.cocos2d-x.org/programmersguide/1/index.html), that has a decent overview that will tell you why you should give it a go.