I've not used both, but keep in mind that SpriteKit is only for iOS 7. Cocos2d-iphone is also really mature, compared to SpriteKit. If you want something cros

I've not used both, but keep in mind that SpriteKit is only for iOS 7. Cocos2d-iphone is also really mature, compared to SpriteKit. If you want something cross-platform, look into cocos2d-x, which uses C++, but you can use their JavaScript bindings. This is all for 2D games. For 3D look into Unity.