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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Forum Rules and Important Info - Read Before Posting!
by msleeper · Jan 19, 2026
2 Replies · 339 Views
Last post by msleeper
Jan 19, 2026
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(FIXED) HELP, PLEASE! Portal 2 dialogue is cutting out. How do I fix it?
by Benjamin Curtis BC Media · Jul 28, 2020
2 Replies · 3,714 Views
Last post by awev
Sep 11, 2025
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Soundscapes not working
by Nokaut · Jan 01, 2025
1 Replies · 2,282 Views
Last post by Nokaut
Jan 01, 2025
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Hammer++ Issues
by oliver3190yt · Jun 19, 2023
0 Replies · 1,937 Views
No replies
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Ceiling Button Challenge Level 0 Portals
by Dr- graves · Oct 09, 2022
0 Replies · 1,050 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?
by Slashed · Jun 15, 2022
0 Replies · 1,056 Views
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My Computer Is freezing While Playing 'Portal 2'!
by IsomKohler · Mar 14, 2022
1 Replies · 1,453 Views
Last post by IsomKohler
Mar 15, 2022
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Portal 2 Roleplay APPLICATION/GUIDE THREAD
by Kiruclanz · May 21, 2011
2 Replies · 3,476 Views
Last post by ThatOneRetro
Mar 04, 2021
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Dubbing project of Portal 2
by elnurvl · May 11, 2019
5 Replies · 3,958 Views
Last post by ChickenMobile
Jul 01, 2019
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SPOILER Security Code: 5,33,41,18 - Does it have a meaning?
by PortalCombat · May 03, 2011
6 Replies · 39,703 Views
Last post by Its_convoluted
Sep 23, 2018
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Nibiru : Age of Secrets demo
by jackanderson231 · Apr 09, 2018
0 Replies · 2,684 Views
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Portal 2 and Mythology
by SecretComing · Jul 04, 2017
1 Replies · 2,772 Views
Last post by EliseRi
Oct 01, 2017
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A story to tell
by KyloX · May 22, 2017
0 Replies · 2,420 Views
No replies
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What if GLaDOS had been smarter?
by CamBen · May 14, 2015
5 Replies · 3,527 Views
Last post by AdamPlays
May 18, 2017
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Official PROOF that Cave is NOT Chell's father
by Mel · Aug 07, 2012
75 Replies · 45,367 Views
Last post by GamerGeek
May 17, 2017
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Portal 2 crashes on start
by juniverse · Oct 10, 2015
5 Replies · 3,125 Views
Last post by UsCobra11
Oct 11, 2015
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Promotion of Maps?
by CrazyMahone · Sep 07, 2015
1 Replies · 2,215 Views
Last post by josepezdj
Sep 08, 2015
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Looking for someone to play "The Doors" coop mod with
by SecretComing · Aug 16, 2015
0 Replies · 2,089 Views
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Portal 2: Repercussions
by Lamarr · Aug 17, 2012
58 Replies · 32,341 Views
Last post by Lamarr
Jun 08, 2015
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Need a Portal 2 Co-op partner? Join this Steam group!
by Arnar105 · May 19, 2011
106 Replies · 85,544 Views
Last post by kyleprotecX
Jan 17, 2015
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Screenshots of new map
by Haggis · Jan 05, 2015
2 Replies · 2,731 Views
Last post by Haggis
Jan 06, 2015