A Phd student at Carnegie Mellon University has written software that allows game developers to combine a Wiimote and UV LED’s into a 3D game world! Basically this means you can duck and move to see new targets/things and dodge things that are chucked at you, like missiles and buildings.
Check it out here, skip to 2:20 on the timeline if you just want to see it in action.
Let me be frank! 