Stencyl (http://www.stencyl.com/ http://www.stencyl.com/) could be a great tool : it's easy at first to do simple games without knowing anything about code, and

Stencyl (http://www.stencyl.com/ http://www.stencyl.com/) could be a great tool : it's easy at first to do simple games without knowing anything about code, and you can progressively learn code, starting with basic logic. Plus, it compiles natively to many platforms: iOS (iPhone/iPad), Android, Flash, Windows, Mac, Linux