"If Quake Live is successful, the next thing that we might look at is Wolfenstein: Enemy Territory," said Carmack, "but it's hard to see how we'd do the same treatment of it."

Wolfenstein's World War II setting was cited as the main reason behind the company's hesitation.

"You're running around fighting the Nazis and there's a billboard with [an advertisement] on it," said Carmack, noting the awkward nature of combining Nazis and Coke ads.