Portal 2 Single Player / Coop

Talk about the game, theories, how to get the achievements and beat the challenge maps, and anything related to Portal 2 Single Player / Coop. Caution: Spoilers abound!

Topics
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[WIP] The next best thing since the portal gun
by Tailgunner · Dec 12, 2011
7 Replies · 2,893 Views
Last post by Billybobjoey
Feb 24, 2012
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Portal 2 Authoring Beta/playing Partner
by Seriously_Casual · Feb 19, 2012
6 Replies · 1,687 Views
Last post by iWork925
Feb 23, 2012
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Coop maps for more than 2 players?
by Zahl · Feb 18, 2012
5 Replies · 4,576 Views
Last post by WinstonSmith
Feb 21, 2012
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Chell Is GLaDOS's and Cave's daughter?
by TripleG10 · Jul 03, 2011
77 Replies · 20,266 Views
Last post by WinstonSmith
Feb 21, 2012
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Portal 2 map with L4D2 content
by lechachat · Feb 19, 2012
1 Replies · 1,265 Views
Last post by Mek
Feb 20, 2012
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Portal 2 problem
by Spycrab Killer · Feb 17, 2012
6 Replies · 1,992 Views
Last post by Spycrab Killer
Feb 18, 2012
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Map Names
by lifeson99 · Feb 17, 2012
3 Replies · 1,349 Views
Last post by WinstonSmith
Feb 17, 2012
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New portal 2 custom map series!
by Mrpaska11 · Feb 14, 2012
8 Replies · 2,393 Views
Last post by Mrpaska11
Feb 16, 2012
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Ping and gestures in coop maps turn-but how?
by JointVenture · Feb 10, 2012
2 Replies · 2,097 Views
Last post by JointVenture
Feb 12, 2012
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Epic Thank You Thread
by co0op · Feb 10, 2012
1 Replies · 1,068 Views
Last post by Another Bad Pun
Feb 12, 2012
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having trouble with co-op
by ryo786 · Feb 05, 2012
5 Replies · 3,446 Views
Last post by ryo786
Feb 06, 2012
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Frankenturrets not affected by gel = New puzzle concept
by 262LetsPlay · Feb 04, 2012
1 Replies · 1,409 Views
Last post by The Irate Pirate
Feb 06, 2012
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My own SP Map Ratings - Yours may Differ Completely
by PCdoc · Feb 03, 2012
4 Replies · 1,986 Views
Last post by PCdoc
Feb 05, 2012
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Quick Saving/Loading?
by rossman231 · Feb 01, 2012
6 Replies · 3,764 Views
Last post by Pitkakorvaa
Feb 03, 2012
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Great large Map (33MB) mis-posted in Portal 1 WIP
by PCdoc · Jan 15, 2012
1 Replies · 1,324 Views
Last post by WinstonSmith
Jan 16, 2012
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Portal 2 Achievement Generator?
by Pipeline · Jan 15, 2012
4 Replies · 2,080 Views
Last post by Pipeline
Jan 15, 2012
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Interesting Portal 2 Bug/Feature
by Sidneys1 · May 09, 2011
5 Replies · 2,530 Views
Last post by Pipeline
Jan 15, 2012
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Portal 2 Old Button Model?
by yohoat9 · Sep 13, 2010
12 Replies · 5,056 Views
Last post by Pipeline
Jan 15, 2012
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Wheatley Easter Egg
by MasterLagger · Sep 25, 2011
8 Replies · 3,434 Views
Last post by Pipeline
Jan 15, 2012
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Portal 2 too static?
by 262LetsPlay · Jan 12, 2012
2 Replies · 1,599 Views
Last post by Idolon
Jan 14, 2012