The latest game to get thrown onto torrent sites [way] ahead of release is Gears of War 3. Not due until September 20 (!) and considered by many as the biggest Xbox 360-exclusive title of the year, a leak this early of a game this big is very surprising. The build is near-final and a poster on the website NeoGAF says that it includes the full single-player campaign and all of the multiplayer options and adds "Buggy as hell, but it seems like it's all there."
Of course, Epic are doing damage control and are trying to contain the leak and go after those who are responsible, claiming they are working with their security teams and law enforcement to address the situation. Epic have said that the leak does not represent the final experience players will have with the real thing.
The leak whilst bad, can also be good for Epic. First, it's not the final build so it does not represent retail quality, secondly it's only playable on the Xbox 360. Gameplay videos have made their way to YouTube and other streaming video sites, so fans of Gears of War 3, start looking for some gameplay footage!