An anonymous reader writes John Carmack left id Software last year, more than 20 years after he founded the company. There was a lot of speculation as to why, and now an interview at USA Today provides an explanation. Carmack had become Chief Technical Officer for Oculus VR a few months prior, and he was excited about bringing virtual reality gaming into the mainstream. Unfortunately, he couldn't get id Software's parent company, Zenimax, onboard. He'd hoped they would 'allow games he worked on to appear on the Oculus Rift headset. Had the deal been consummated, Wolfenstein: The New Order — an upcoming sequel to Wolfenstein 3D, an early id release — could have been part of the Oculus' tech demonstration that earned raves and awards at the recent Consumer Electronic Show.' Carmack said, 'But they couldn't come together on that which made me really sad. It was just unfortunate. When it became clear that I wasn't going to have the opportunity to do any work on VR while at id software, I decided to not renew my contract.'"