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!

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by msleeper Aug 20, 2010 4 Replies · 74,617 Views
by WinstonSmith
Jul 13, 2011
Topics
What has ever happened to making custom maps?
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by Scent Tree Gun Apr 07, 2019 4 Replies · 4,696 Views
by laganrat
Jun 11, 2020
Purple+Black fov hands texture Portal 1?
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by DerekGrafton May 14, 2019 2 Replies · 2,944 Views
by Johnnie John Johnson
Jan 14, 2020
Momentum
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by Johnnie John Johnson Jan 07, 2020 2 Replies · 1,745 Views
by Johnnie John Johnson
Jan 08, 2020
The feel of portal
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by Arachnaphob Mar 25, 2015 4 Replies · 3,915 Views
by Berna2078
Dec 20, 2019
[Tutorial] The Portal Glitch Bible
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by Siiig May 15, 2009 46 Replies · 40,245 Views
by Pookachu
Mar 04, 2019
Found portal 2005 chapter icons
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by MrPLotor Sep 01, 2017 1 Replies · 2,857 Views
by MrPLotor
Sep 22, 2017
Portal Chamber 09, what the heck?
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by theVDude Aug 01, 2009 7 Replies · 5,892 Views
by MrPLotor
Aug 20, 2017
Why does GLaDOS look different?
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by Axon9000 Jul 11, 2013 19 Replies · 16,960 Views
by Luke18033
May 29, 2017
Portal Texture Broke
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by Bobi May 17, 2014 5 Replies · 3,846 Views
by portal2
Jun 06, 2014
Android Heck
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by Joe the Stickfiddler Nov 11, 2013 0 Replies · 2,722 Views
No replies
Cool Conundrum results
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by Joe the Stickfiddler Nov 06, 2013 3 Replies · 3,147 Views
by TheTestmasterSphere
Nov 10, 2013
Running the demo is not helpful!
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by Joe the Stickfiddler Nov 04, 2013 7 Replies · 3,892 Views
by Joe the Stickfiddler
Nov 07, 2013
Portal DirectX optimization with Portals (For bad computers)
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by Chilius03 Oct 29, 2013 0 Replies · 2,745 Views
No replies
My portals dosen't look good
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by DromEd Oct 26, 2013 2 Replies · 2,966 Views
by TeamSpen210
Oct 26, 2013
I am Making a portal 2 E3 mod within Portal 1
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by Chilius03 Oct 19, 2013 4 Replies · 3,348 Views
by Chilius03
Oct 19, 2013
Unsettling thing in Test 15
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by Dafflewoctor Aug 05, 2013 7 Replies · 5,915 Views
by metroid101
Aug 17, 2013
Source SDK 2013 released!
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by Fluppy Jun 28, 2013 6 Replies · 4,490 Views
by Gemarakup
Jun 30, 2013
Mods stopped working.
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by AD_79p2 Jun 26, 2013 3 Replies · 3,370 Views
by Axon9000
Jun 27, 2013
SteamPipe update released - what does it mean for us?
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by Fluppy Jun 25, 2013 12 Replies · 9,079 Views
by Fluppy
Jun 26, 2013
Can someone make me a portal gun skin?
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by edroid999 Jun 24, 2013 11 Replies · 7,683 Views
by edroid999
Jun 26, 2013