During Sony's E3 press conference, the company revealed that the PlayStation 3 would be the only console to receive Epic's highly anticipated entry in the multiplayer-oriented shooter franchise this year. Both the PlayStation 3 and the PC version--also due this fall--will allow players to download and utilize user-created content, which can theoretically range from new maps to entirely new modes and games.

"We didn't want to port it to PS3 and lose all the awesome things about the PC version," Epic producer Tanya Jessen told Shacknews at E3. However, Microsoft's stricter policies regarding the execution of uncertified content present difficulties in doing the same on Xbox 360

"That's part of the reason we announced we were shipping the game on PC and PS3 this Fall, but we don't have a date for the Xbox 360 version," Epic VP Mark Rein told CVG. "It'll be some time after the new year. Part of that is because we haven't been able to figure out just how we're going to do the mods. And Microsoft's got a very busy Christmas schedule."

"We just couldn't get enough attention from [Microsoft] to solve that problem," Rein continued, noting that the one possible solution would involve submitting the various user-created mods through Microsoft's certification process and placing them on the Xbox Live Marketplace. "That's the worse case scenario. Hopefully between now and whenever it is we ship on Xbox 360, we figure out a user-managed way to do it."