Remember back when we said Free Portal 2 DLC is scheduled for September? Well, Valve almost made it, as the DLC is now set to hit Steam, Xbox 360 and PlayStation 3 on Tuesday, October 4.
The DLC in question is called Portal 2: Peer Review. It includes both solo and co-op content, continuing the story of co-op robots P-Body and Atlas. It also introduces a new Challenge Mode with accompanying leaderboards. Are you ready to take on GLaDOS's puzzles once again?