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.
Where to buy
Prices for US · Updated 7/3/2026
News
Portal 2 - GameSpot
GameSpot · 4/8/2020
We Play: Portal 2 Peer Review DLC - GameSpot
GameSpot · 3/31/2014
Portal 2 “Peer Review” PC Review - eTeknix
eTeknix · 11/9/2012
Portal 2 Peer Review DLC: fun, but missing the magic - Ars Technica
Ars Technica · 10/7/2011
Free Portal 2 DLC Is Available to download from today - GamingBolt
GamingBolt · 10/5/2011
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