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A Lord of the Rings theoryIn General Off Topic Discussion · 6 years ago

Spam Cleanup and User RegistrationsIn News and Announcements · 6 years ago

The feel of portalIn Portal Single Player · 10 years ago

Call to action: Looking for writers, authors, and moreIn News and Announcements · 6 years ago

2018 Thinking With Portals Mapping CompetitionIn News and Announcements · 7 years ago

[SP] The RevisionIn Community Releases · 6 years ago

[SP] Pressure CubeIn Community Releases · 6 years ago

Thinking.WithPortals 2019 'Summer' Mapping CompetitionIn News and Announcements · 6 years ago

Entities are missing in mapIn Hammer and Modding · 6 years ago

[SP] Brain DonutsIn Community Releases · 6 years ago

[SP] OdysseyIn Community Releases · 6 years ago

Any way possible to change the default PTI music in Hammer?In Hammer and Modding · 6 years ago

DOWNLOAD LINKS ARE BROKENIn General Off Topic Discussion · 6 years ago

Faceposer Scene Creation Help (+Crash)In Hammer and Modding · 6 years ago

[PTI] Apocalyptic Testing InitiativeIn Community Releases · 6 years ago

Should we sign a petition to make Portal 2 free?In General Off Topic Discussion · 6 years ago

Dubbing project of Portal 2In Portal 2 Single Player / Coop · 6 years ago

Upload helpIn Hammer and Modding · 6 years ago

Vectronic (Playable Demo Available)In General Off Topic Discussion · 10 years ago

Regarding messing up the logic_choreographed_scenesIn General Off Topic Discussion · 6 years ago

[SP] Exhaust StationIn Community Releases · 6 years ago

Epic Introduction ThreadIn General Off Topic Discussion · 18 years ago

Coop mod course in hubIn Hammer and Modding · 6 years ago

[Coop] Dependent cubesIn Community Releases · 6 years ago

[PORTAL 2 MOD] Aperture Apocalypse Now Hiring!In Hammer and Modding · 6 years ago

Single player hubIn Hammer and Modding · 7 years ago

question about map loading with console commandsIn Puzzle Creator and Workshop · 6 years ago

Try Anything TwiceIn Community Releases · 15 years ago

Glass breaking and destructionIn Hammer and Modding · 6 years ago

Modding crew!In Hammer and Modding · 6 years ago

For Old Times SakeIn Community Releases · 13 years ago

[SP] Hyperdimension Nep TestIn Community Releases · 6 years ago

[Coop] Yandere TestIn Community Releases · 6 years ago

[SOLVED] Lighting Glitch: Textures Appear BlackenedIn Hammer and Modding · 6 years ago

[Tutorial] The Portal Glitch BibleIn Portal Single Player · 16 years ago

[Solved] Custom Textures Discolored & Have Tiled OutlinesIn Hammer and Modding · 6 years ago

Aperture Science IBM 5150 3D modelIn Community Releases · 6 years ago

[Answered] Named Light Entities Don't Produce Light ProperlyIn Hammer and Modding · 6 years ago

Portal 2 Mod [Looking for mappers to help]In Hammer and Modding · 6 years ago

Inventory?In Hammer and Modding · 6 years ago

(minecraft)Portal 2 HD 64x resourcepack By Xcissors 1.13In General Off Topic Discussion · 7 years ago

Hammer compile issueIn Hammer and Modding · 7 years ago

I need smoke to go after the player.In Hammer and Modding · 7 years ago

How can I replicate the portal 2 style of music?In General Off Topic Discussion · 7 years ago

Light emmiting texturesIn Hammer and Modding · 7 years ago

Texture Offsets for some reasonIn Hammer and Modding · 7 years ago

Prevent Cube PickupIn Hammer and Modding · 7 years ago

Sprouting leaks without changes to the map.In Hammer and Modding · 7 years ago

Can an Instance be parented?In Hammer and Modding · 7 years ago

Skybox overwriting wall textures.In Hammer and Modding · 7 years ago