Hi guys. I'm looking for a game controller for a kid with an iMac late 2011. She's 8 so just a standard cheapy one will do. I don't know anything about this sort of thing. She is trying to play the Lego Harry Potter game and keyboard commands are hard for her. Any suggestions on which one to get? I don't want to spend a lot since she is just getting into gaming and still just learning and she may not even like it. She is running latest version of Yosemite.