John Carmack recently joined Oculus VR to serve as their chief technology officer, but remained at id Software. However, Carmack found working two jobs quite difficult, and has officially announced his resignation from the Doom and Quake developer.

"I wanted to remain a technical adviser for Id, but it just didn't work out. Probably for the best, as the divided focus was challenging," he said on Twitter.

"John Carmack, who has become interested in focusing on things other than game development at id, has resigned from the studio," id studio director Tim Willits said in a statement to Polygon. "John's work on id Tech 5 and the technology for the current development work at id is complete, and his departure will not affect any current projects. We are fortunate to have a brilliant group of programmers at id who worked with John and will carry on id's tradition of making great games with cutting-edge technology. As colleagues of John for many years, we wish him well."