When Doom programmer John Carmack left the company he founded to go work on the Oculus Rift, the assumption was that Carmack had traded a stale job for an opportunity to pursue his hobby — virtual reality — instead. His former studio, id Software, suggested as much in a statement at the time he left, saying that Carmack had become interested in focusing on things other than game development at id. The real reason that Carmack left id, he tells USA Today, was because he couldnt work on virtual reality games while he remained at the studio. Originally, Carmack had championed virtual reality while still at id, going so far as to promise that Doom 4 would support the technology.