I've mastered Cocos2D, Cocos2Dx, Box2D and Unity3D. Here are the games I've developed in the past. https://itunes.apple.com/us/app/mobile-aquarium/id327755335?mt=8&ign-mpt=uo%3D8 https://itunes.apple.com/us/app/monopoly/id337021781?mt=8&ign-mpt=uo%3D8 https://itunes.apple.com/us/app/my-new-baby/id821470238?mt=8&ign-mpt=uo%3D8 https://itunes.apple.com/us/app/lifeline-crisis-line/id1096287686?mt=8&ign-mpt=uo%3D8 https://itunes.apple.com/us/app/megapolis/id580765736?mt=8&ign-mpt=uo%3D8