Sorry if this so happens to be in the wrong forum, or something, but I've read how GE doesn't support game controllers, like USBs. SO, for that reason, I have a program to recommend: it's called Joystick2Mouse, and it lets you remap your mouse and keyboard keys to a controller. This way, you can play GE games like a console game if you wanted to . You can even move the mouse cursor with the controller; try it! What more, you can set it all up however you like, and ultimately the program is freeware.
Well, thought I'd recommend this, for this time being that GE doesn't support controllers yet.