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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Possible new easter egg (?)
by IvoryKeysADSR · May 13, 2012
5 Replies · 2,456 Views
Last post by Xof0971
Jun 12, 2012
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HELP! Huge crash problems with PTI maps
by IAMVOLDY · Jun 07, 2012
5 Replies · 2,236 Views
Last post by IAMVOLDY
Jun 08, 2012
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Portal DeJa-Vu - Teaser
by audiotrash · Feb 18, 2012
23 Replies · 7,786 Views
Last post by PortalFan95
Jun 06, 2012
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I need some difficult co-op maps.
by xW10 · Jun 04, 2012
6 Replies · 4,948 Views
Last post by BEARD!
Jun 04, 2012
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Music - Portal 2 Fan Composition
by AniCator · May 13, 2012
3 Replies · 2,032 Views
Last post by Paradoxic R3mix
Jun 03, 2012
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Unlisted bug fix I noticed...
by KKiONI · May 23, 2012
4 Replies · 1,779 Views
Last post by KKiONI
May 24, 2012
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A thesis (spoilers) ONLY CLICK IF YOU'RE MAN ENOUGH FOR IT!!
by Chelley · May 20, 2012
4 Replies · 1,699 Views
Last post by Lpfreaky90
May 24, 2012
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Portal-Ception
by Conway · May 16, 2012
20 Replies · 5,604 Views
Last post by spongylover123
May 19, 2012
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Problems with elevator?
by vatomakifty · May 12, 2012
4 Replies · 1,773 Views
Last post by vatomakifty
May 14, 2012
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Play Testers Wanted!
by Spam Nugget · May 10, 2012
13 Replies · 3,791 Views
Last post by ChickenMobile
May 11, 2012
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Loading game saves for Perpetual Testing Initiative
by SergeantFTC · May 08, 2012
3 Replies · 1,945 Views
Last post by HMW
May 10, 2012
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Skill based/Ninja maps
by mZLY · May 01, 2012
4 Replies · 1,765 Views
Last post by baca25
May 10, 2012
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Anyone got the regular portal gun skin?
by Spyro Cool · May 07, 2012
5 Replies · 2,116 Views
Last post by Spyro Cool
May 07, 2012
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Hardest SP Maps
by AnaLoGMunKy · Sep 09, 2011
19 Replies · 9,966 Views
Last post by AnaLoGMunKy
May 03, 2012
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ps3 map downloads!
by thegeekykid47 · Mar 13, 2012
5 Replies · 2,486 Views
Last post by josepezdj
May 03, 2012
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URGENT: Friend has managed to lose the coop lobbies
by RubbishyUsername · Apr 29, 2012
4 Replies · 2,279 Views
Last post by RubbishyUsername
Apr 30, 2012
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Video my Portalgun shaking in some custom maps.
by Makadi · Feb 25, 2012
6 Replies · 2,195 Views
Last post by Makadi
Apr 29, 2012
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Coop Hub for Custom Maps - Betatesters needed
by Tailgunner · Mar 07, 2012
13 Replies · 5,256 Views
Last post by mZLY
Apr 28, 2012
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GLaDOS and Chell
by Chelley · Apr 24, 2012
18 Replies · 6,436 Views
Last post by MasterLagger
Apr 27, 2012
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Preview of the ultimate Map Handling Tool
by Tailgunner · Apr 25, 2012
6 Replies · 1,920 Views
Last post by Tailgunner
Apr 25, 2012