In a journalistic sphere that's prone to hyperbole, the term "game changer" is one we hear too damn often. Then again, the opportunity to play Doom 3: BFG Edition in a 3D VR headset doesn't come along terribly often. At Quakecon, that's exactly what we got to do. Sitting down with John Carmack, id Software's Co-Founder and Technical Director, is an experience in itself. Carmack is a living legend who is credited, along with his team at id, for making first person shooters a thing with Wolfenstein 3D. Even as he approaches his 42nd birthday, his aura is that of a whiz kid whose enthusiasm is unmatchable. At Quakecon, Carmack showed us an engineering prototype of the Oculus Rift, the wildly successful Kickstarter project started by Palmer Luckey and the rest of Oculus.