When was Portal 2: Peer Review released?

Portal 2: Peer Review was released on October 4, 2011.

What platforms is Portal 2: Peer Review available on?

Portal 2: Peer Review is available on Xbox 360, PlayStation 3.

Does Portal 2: Peer Review have multiplayer?

No — Portal 2: Peer Review is a single-player game.

Who developed Portal 2: Peer Review?

Portal 2: Peer Review was developed by Valve.

What is the age rating of Portal 2: Peer Review?

Portal 2: Peer Review is rated E10+ by ESRB.

Portal 2: Peer Review (2011) — Puzzle Xbox 360 Stats

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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.

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