Portal 2: Peer Review

2011 · Valve

Platforms:PlayStation 3,Xbox 360

Genres:Adventure,Puzzle

Themes:Comedy

Part of the Portal series

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Media & Info

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.