Immersive Quake superimposed over meatspace

Augmented Reality Quake is an Australian academic project to integrate the open-source Quake code with VR goggles and plastic guns. Basically, you put on a headset and the game superimposes enemy characters, geographic elements, and power-ups over your field of vision, so that as you run around the parking lot or football field, you play a Quake that only you can see. Check out the movies from the project.

Link

(Thanks, Rooter!)