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Portal | Underground Story V2?In Hammer and Modding · 16 years ago

[WIP] Second Chance At LoveIn Hammer and Modding · 16 years ago

Portal: Prelude Video :Not really any spoilers but some:In General Off Topic Discussion · 16 years ago

The greatest thing since sliced bread.In General Off Topic Discussion · 16 years ago

Companion cube?In General Off Topic Discussion · 16 years ago

[Release] Aperture Discord/Test Chamber 23In Community Releases · 17 years ago

Portal: Project BetaIn General Off Topic Discussion · 16 years ago

Map Reload ProblemsIn Hammer and Modding · 16 years ago

I need a few maps that are challenging.In General Off Topic Discussion · 16 years ago

no Portalgun?!In Hammer and Modding · 16 years ago

[WIP] PMK 5In Hammer and Modding · 16 years ago

Happy Birthday, ThinkingWithPortals!In News and Announcements · 16 years ago

First map: Cryo Chamber Release - Need Help!In Hammer and Modding · 16 years ago

Mystery extension in the save file.In General Off Topic Discussion · 16 years ago

So I have to bragIn General Off Topic Discussion · 16 years ago

Companion Cube Pixel ArtIn General Off Topic Discussion · 16 years ago

It's counting down...In Hammer and Modding · 16 years ago

[WIP] Logic Portals : GLaMS-DOSIn Hammer and Modding · 17 years ago

Respawn Cube?In Hammer and Modding · 16 years ago

OMG Someone at Facepunch ownsIn General Off Topic Discussion · 16 years ago

Portal: PreludeIn General Off Topic Discussion · 16 years ago

StoryLines for PortalIn Hammer and Modding · 16 years ago

Cross hairsIn Portal Single Player · 16 years ago

Where the hell is my Portal gun?In General Off Topic Discussion · 16 years ago

how to get screenshots without the portal gun ??In Hammer and Modding · 16 years ago

[WIP] Kaiser Test Chamber (Early Prototype)In Hammer and Modding · 16 years ago

Fizzler questionIn Hammer and Modding · 16 years ago

Cubemaps in next mapIn Hammer and Modding · 16 years ago

Development ModIn General Off Topic Discussion · 16 years ago

Which custom maps here use the portal-inspired music pack?In General Off Topic Discussion · 16 years ago

ITT: Duffedwaffle is an ADHD close-minded conservativeIn General Off Topic Discussion · 16 years ago

[WIP] tube (first map ever)In Hammer and Modding · 16 years ago

Awesome?In General Off Topic Discussion · 16 years ago

newb here needs help 🙁In Hammer and Modding · 16 years ago

how do i make a brush into something you can pick up?In Hammer and Modding · 16 years ago

Portal AvatarsIn General Off Topic Discussion · 16 years ago

SporeIn General Off Topic Discussion · 16 years ago

SnarkPit's 2008 mini-competition votingIn General Off Topic Discussion · 16 years ago

New to mapping, couple questionsIn Hammer and Modding · 16 years ago

SAPI 5.1 doesnt work ?In Hammer and Modding · 16 years ago

Texture ReflectIn Hammer and Modding · 16 years ago

Make Overlays?In Hammer and Modding · 16 years ago

lights/white?In Hammer and Modding · 16 years ago

HEY GUYS REMEMBER WHEN THIS WAS A JOKEIn General Off Topic Discussion · 16 years ago

Meet the Furger-ArgorockIn General Off Topic Discussion · 16 years ago

FINALLY Swirl PortalsIn Portal Single Player · 16 years ago

Release of Ring PortalsIn Portal Single Player · 16 years ago

In-Game Mapping VidsIn General Off Topic Discussion · 16 years ago

Question about portal and steamIn Portal Single Player · 16 years ago

MTN Portal Story | Project twO Trailer avaibleIn Hammer and Modding · 16 years ago