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!

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by msleeper Jan 19, 2026 2 Replies · 91 Views
by msleeper
Jan 19, 2026
Topics
(FIXED) HELP, PLEASE! Portal 2 dialogue is cutting out. How do I fix it?
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by Benjamin Curtis BC Media Jul 28, 2020 2 Replies · 3,552 Views
by awev
Sep 11, 2025
Soundscapes not working
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by Nokaut Jan 01, 2025 1 Replies · 2,210 Views
by Nokaut
Jan 01, 2025
Hammer++ Issues
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by oliver3190yt Jun 19, 2023 0 Replies · 1,863 Views
No replies
Ceiling Button Challenge Level 0 Portals
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by Dr- graves Oct 09, 2022 0 Replies · 996 Views
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Does anyone know what's the song when you're going up the escape elevator, before the turret opera starts?
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by Slashed Jun 15, 2022 0 Replies · 1,013 Views
No replies
My Computer Is freezing While Playing 'Portal 2'!
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by IsomKohler Mar 14, 2022 1 Replies · 1,376 Views
by IsomKohler
Mar 15, 2022
Portal 2 Roleplay APPLICATION/GUIDE THREAD
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by Kiruclanz May 21, 2011 2 Replies · 3,390 Views
by ThatOneRetro
Mar 04, 2021
Dubbing project of Portal 2
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by elnurvl May 11, 2019 5 Replies · 3,841 Views
by elnurvl
Jul 01, 2019
[SPOILER]Security Code: 5,33,41,18 - Does it have a meaning?
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by PortalCombat May 03, 2011 6 Replies · 39,207 Views
by Its_convoluted
Sep 23, 2018
Nibiru : Age of Secrets demo
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by jackanderson231 Apr 09, 2018 0 Replies · 2,624 Views
No replies
Portal 2 and Mythology
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by SecretComing Jul 04, 2017 1 Replies · 2,721 Views
by EliseRi
Oct 01, 2017
A story to tell
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by KyloX May 22, 2017 0 Replies · 2,346 Views
No replies
What if GLaDOS had been smarter?
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by CamBen May 14, 2015 5 Replies · 3,447 Views
by AdamPlays
May 18, 2017
Official PROOF that Cave is NOT Chell's father
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by Mel Aug 07, 2012 75 Replies · 44,294 Views
by jack980517
May 17, 2017
Portal 2 crashes on start
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by juniverse Oct 10, 2015 5 Replies · 3,015 Views
by juniverse
Oct 11, 2015
Promotion of Maps?
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by CrazyMahone Sep 07, 2015 1 Replies · 2,157 Views
by CrazyMahone
Sep 08, 2015
Looking for someone to play "The Doors" coop mod with
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by SecretComing Aug 16, 2015 0 Replies · 2,038 Views
No replies
Portal 2: Repercussions
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by Lamarr Aug 17, 2012 58 Replies · 31,564 Views
by Rlski
Jun 08, 2015
Need a Portal 2 Co-op partner? Join this Steam group!
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by Arnar105 May 19, 2011 106 Replies · 84,137 Views
by kyleprotecX
Jan 17, 2015
Screenshots of new map
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by Haggis Jan 05, 2015 2 Replies · 2,668 Views
by Arachnaphob
Jan 06, 2015