"It's going to be used within ZeniMax, so we're not going to license it to external parties," Hollenshead told Eurogamer at QuakeCon 2010 in Dallas today.

"It's like, look, this is a competitive advantage and we want to keep it within games we publish - not necessarily exclusively to id or id titles, but if you're going to make a game with id Tech 5 then it needs to be published by Bethesda, which I think is a fair thing."

Hollenshead said he could imagine the technology being used by third-party developers, but only if their games were published by Bethesda, under which circumstances id would withhold nothing.