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Twitter user PixelButts posted a tweet earlier today, announcing that they had uploaded the build to the Internet Archive website, for anyone to download.
The news comes with a fairly large caveat, however – as it stands, the game can only be run on debug PS3 consoles, because they have more RAM than retail units.
The build was created by Epic Games on May 19, 2011, so PixelButts decided to release it yesterday to mark its 10th anniversary.
PixelButts adds that in the future the prototype may be playable on the RPCS3 emulator, but at the moment it only boots to the title screen and doesn’t play beyond that.
The PS3 version of Gears of War 3 is a legitimate prototype, but it was never designed to be released and the game was always supposed to be an Xbox exclusive.
After PixelButts shared video footage of the prototype last year, an Epic Games spokesperson confirmed to Kotaku that it was real but explained that it was only an experiment, not a legitimate project.
“This footage is a byproduct of Epic’s internal Unreal Engine 3 testing process, which utilised both Gears and Unreal Tournament, and was never part of any actual product work for PlayStation 3,” the spokesperson said at the time.
The 2020 video, which was more than 8 hours long, showed a playthrough of almost the entire game running on a PS3, albeit with severe frame rate problems at times and various graphical glitches.