Portal Single Player

Talk about the game, custom maps, how to get the achievements and beat the challenge maps, and anything related to Portal 1. Caution: Spoilers abound!

Topics
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Release of Ring Portals
by PortalFan77 · Aug 11, 2008
10 Replies · 4,908 Views
Last post by reepblue
Sep 09, 2008
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Question about portal and steam
by nibbler234 · Sep 01, 2008
6 Replies · 2,857 Views
Last post by Ricotez
Sep 09, 2008
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Portal Effect from Teaser Trailer
by Test Subject · Jun 13, 2008
21 Replies · 9,733 Views
Last post by Test Subject
Sep 08, 2008
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freaky!!!
by Bosf · Aug 01, 2008
3 Replies · 2,161 Views
Last post by jrlauer
Sep 04, 2008
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What happened to project betA?
by nibbler234 · Aug 29, 2008
1 Replies · 1,641 Views
Last post by CabooseJr
Aug 29, 2008
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Idea: Portal Multiplayer
by nathan42100 · Nov 23, 2007
99 Replies · 30,077 Views
Last post by rellikpd
Aug 20, 2008
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my achievements got reset :(
by pestchamber · Jun 26, 2008
21 Replies · 8,554 Views
Last post by msleeper
Aug 15, 2008
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New Playermodel and need help
by PortalFan77 · Aug 07, 2008
0 Replies · 1,523 Views
No replies
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camspace portal
by Bosf · Jul 28, 2008
2 Replies · 1,897 Views
Last post by WackoMcGoose
Jul 28, 2008
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Uh what the fuck?
by msleeper · May 29, 2008
21 Replies · 9,468 Views
Last post by msleeper
Jul 23, 2008
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Are you camera shy? (Achievement, spoilers)
by Robinson · Oct 15, 2007
20 Replies · 11,188 Views
Last post by Duffers
Jul 23, 2008
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Problems with Portal's Graphics
by Ehqz · May 10, 2008
20 Replies · 10,123 Views
Last post by bizob
Jul 08, 2008
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Portal Anagylph?
by Bosf · May 17, 2008
13 Replies · 6,079 Views
Last post by rellikpd
Jul 05, 2008
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achievements pictures-problem?
by KernCore · Jun 21, 2008
4 Replies · 2,277 Views
Last post by KernCore
Jun 21, 2008
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never-complete level?
by pestchamber · May 16, 2008
27 Replies · 10,496 Views
Last post by Ricotez
Jun 17, 2008
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who are your favorite character ?
by pestchamber · May 23, 2008
15 Replies · 7,351 Views
Last post by Test Subject
Jun 08, 2008
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lost saved game plssssss help
by mhafizji · Jun 06, 2008
6 Replies · 3,258 Views
Last post by Aldéz
Jun 06, 2008
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how do you load custom portal maps?
by jon1467 · Jun 01, 2008
7 Replies · 4,662 Views
Last post by sbrown
Jun 02, 2008
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How do you play your custom maps?
by jon1467 · May 28, 2008
2 Replies · 2,112 Views
Last post by jon1467
May 29, 2008
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"CHEATED" was a fail
by pestchamber · May 17, 2008
6 Replies · 4,965 Views
Last post by pestchamber
May 23, 2008