Portal 2: Peer Review
PuzzleAdventure
PlayStation 3 · Xbox 360
Track this on GameDeck
Log it, rate it, and keep up with people who are into the same games.
Free to use · no credit card needed
About
Portal 2: Peer Review includes an additional course for Portal 2 co-op campaign, dubbed "Art Therapy"; as well as Challenge Mode for both single-player or multiplayer campaign, where players can play specific levels and compete in friends/worldwide leader-board.