Learn & MasterCocos2D Game Development "Crack that Coconut!" The Cocos2D-SpriteBuilder game engine is a strong alternative to SpriteKit for iOS and OS X game developers. Sometimes, it can be a tough nut to crack. I’m Steffen, book author, blogger, game developer and nutcracker. I’m most active on Stackoverflow.com where I moderate, and sometimes answer, questions on Cocos2D, SpriteBuilder, Sprite