Update [4:16 p.m. PT]: In a statement to USgamer, an Epic spokesperson commented on the footage that surfaced today, clarifying the nature of it.
"This footage is a byproduct of Epic's internal Unreal Engine 3 testing process, which utilized both Gears and Unreal Tournament, and was never part of any actual product work for PlayStation 3," the spokesperson says.
The original story follows:
The Gears series has been a Microsoft mainstay for a long time, even when it was still being developed over at Epic. But footage surfaced today, from a supposed build of Gears of War 3, running on a PlayStation 3 dev kit, raising some questions.
The footage in question purports to show a PlayStation 3 dev kit running Gears of War 3 in its entirety. In the notes of the upload, YouTube user Proto says the build is dated May 19, 2011, and that as far as they know, they're the only person with a working build of this.
Proto notes that its running on a dev kit due to the additional RAM, and that Xbox button prompts appear as "it tries to read storage like the Xbox 360." They also state they won't be sharing the build or the fix for the build. Despite getting it running, the build is still fairly choppy with performance hits, especially around Anya's hair.
There's certainly reason to be somewhat skeptical of this build. Kotaku reports that their sources say it was a build made by Epic Games. The data appears to come from a 2011 security breach of Epic and other game companies.
Kotaku also reports that Proto, who also goes by PixelButts on Twitter, shared a video with them that showed the game booting on a PS3 dev kit to verify its validity. We've reached out to Epic for comment.
Whether this exists as a "what-if" build that was just tucked away by a developer back in 2011, or whether there was any serious consideration of bringing Gears of War 3 to a new console, is unclear. The Gears series continues to stay with Microsoft, now fully under The Coalition after it purchased Gears from Epic in 2014.
The series has since grown, undergoing a soft reboot-sequel in Gears of War 4 and carrying forward into last month's Gears Tactics. For more on the history of Gears, check out our interview with longtime Gears head Rod Fergusson.