Seeing as many people have smartphones or tablets are there any games that allow you to use them as a control device like the WiiU gamepad or can be modded to do so?
Graphics tablets are another input device which are poorly supported in games. For example WoW treats it like a joystick the last time I tried which was really annoying as the tablet I had a clear slippy plastic surface so you could print a picture of your interface,slip it underneath then use alt z to remove the ingame interface for a more immersive experience.