Enormous 12TB Steam leak includes abandoned Half-Life 2: Episode 3 assets

Over 12 terabytes of data, containing builds of every game uploaded to Steam between 2003 and 2013, has been leaked . We don't know everything in the archives yet because of its massive size. But people have already dug up assets related to the canceled Half-Life 2: Episode 3 , content cut from Portal 2 , and a build of a game called F-Stop that's set in the Portal universe but is built around a camera mechanic.