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Summary
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.
Portal 2: Peer Review Activation Instructions
Release Date | October 4, 2011 |
Publisher | Valve |
Content Rated | E10+ (Everyone 10+) |
Game Modes | Single player |
Player Perspectives | First person |
Genres | Puzzle, Adventure |
Themes | Comedy |
Platforms | PlayStation 3, Xbox 360 |