|date=October 4, 2011
|genre=WikipediaFirst-person shooter|First-person shooter, WikipediaPuzzle video game|puzzle video game
|mode=WikipediaCooperative gameplay|Multiplayer co-op
|platform=WikipediaMicrosoft Windows|Windows, WikipediaMac OS X|OS X, WikipediaLinux|Linux, WikipediaXbox 360|Xbox 360, WikipediaPlayStation 3|PlayStation 3
|rating=*WikipediaEntertainment Software Ratings Board|ESRB Everyone 10+
*wikipediaComputer Entertainment Rating Organization|CERO A (All Ages)
|system=PC, Mac, PlayStation 3, Xbox 360
|input=WikipediaKeyboard (computing)|Keyboard and WikipediaMouse (computing)|mouse, WikipediaXbox 360 Controller|Xbox 360 Controller, WikipediaDualShock 3|DualShock 3
|series=''Half-Life and Portal universe|Portal''
'''''Peer Review''''' is a DLC made for ''Portal 2'' aimed at expanding upon the co-op part of the game.
It continues the story of ATLAS and P-body as they assist GLaDOS in finding a mysterious intruder in the facility through the Cooperative Testing Courses|Cooperative Testing Course "Cooperative Testing Courses Therapy|Art Therapy", and adds a challenge mode for both singleplayer and co-op maps, allowing a player to race certain maps, trying to place the least amount of portals in the shortest amount of time, as well as compare their scores with other users.
[http//www.videogamer.com/xbox360/portal_2/news/portal_2_peer_review_dlc_out_now.html Portal 2 Peer Review DLC out now on Videogamer.com (October 4, 2011)]
*ATLAS and P-body
*The Earth creatures 2|bird and her three chicks
CategoryPortal 2 DLCs