John Carmack Demonstrates a VR Headset at E3 2012

Cited as an early, primary-source look at Carmack's VR prototype, which preceded his move to Oculus.

A Gamereactor interview at E3 2012 with John Carmack, who shows his lag-free head-mounted display running DOOM 3 BFG Edition. He discusses what the headset could mean for the games industry.