Here's a rough video of some work I'm doing for Colin McDonnell, the William Merritt centre and all one-switch users who enjoy video games. SpecialEffect are supporting with the loan of a Titan One too.
The system is using a mix of utilities (JoyToKey, vJoy and Pulse) with a Titan One USB device to reduce navigation and game playing controls down to a single switch. I've been tinkering with Basketball, COD and a few others on PS3 and Xbox 360. Huge possibilities. Very excited. Should be very affordable too, and will work with almost any switch that can trigger a key, mouse or joystick type event, including MakeyMakey.