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Map doesn't renderIn Hammer and Modding · 14 years ago

Big performance drop with env_portal_laserIn Hammer and Modding · 14 years ago

I want to do sth like an achievementIn Hammer and Modding · 14 years ago

Score for MicrosoftIn General Off Topic Discussion · 14 years ago

Doctor's Rounds with SatchmoIn General Off Topic Discussion · 14 years ago

Prop fade distance not workingIn Hammer and Modding · 14 years ago

Holy **** dlc out!In Portal 2 Single Player / Coop · 14 years ago

8 GB vs 16 GBIn General Off Topic Discussion · 14 years ago

[Coop] The caveIn Community Releases · 14 years ago

DLC and community map support...In Hammer and Modding · 14 years ago

[WIP] [WIP] Up and Down V3In Community Releases · 14 years ago

.Zip or .rar?In General Off Topic Discussion · 14 years ago

[SP] MonoportalIn Community Releases · 14 years ago

Authoring Tools Not WorkingIn Hammer and Modding · 14 years ago

Amazing! Simply, amazing!In Portal 2 Single Player / Coop · 14 years ago

[Coop] [coop] refractionIn Community Releases · 14 years ago

DLC appears to have completely broken the authoring tools!In Hammer and Modding · 14 years ago

To much to little?In General Off Topic Discussion · 14 years ago

[SP] Aperture Experimental LabsIn Community Releases · 14 years ago

Portal 2 DLC, New Soundtrack, New Spotlight and More!In News and Announcements · 14 years ago

5.9 Earthquake hits east coastIn General Off Topic Discussion · 14 years ago

[HELP] Portal gel not turning surfaces whiteIn Hammer and Modding · 14 years ago

Video and Images of the first portal 2 dlc [SPOILERS]In Portal 2 Single Player / Coop · 14 years ago

STILL ALIVE MAPSIn Hammer and Modding · 14 years ago

[SP] sp_Acrobatics_PortalRun Created by ]ES[ Church Xx ]GaD[In Community Releases · 15 years ago

[WIP] [WIP] P2_Trickery [Fully working!]In Community Releases · 14 years ago

Multiple lines from WheatleyIn Hammer and Modding · 14 years ago

Where are my new map?In Hammer and Modding · 14 years ago

Using an artificial cube imageIn Hammer and Modding · 14 years ago

Wheatly talk...In Hammer and Modding · 14 years ago

I just finished levelsIn Hammer and Modding · 14 years ago

[WIP] [WIP] the_surprise_test_chamberIn Community Releases · 14 years ago

DLC announced for October 4In Portal 2 Single Player / Coop · 14 years ago

What happens when there is more than 4 visible portalsIn Hammer and Modding · 14 years ago

[WIP] [WIP] Chamber 02In Community Releases · 14 years ago

Only 1 sound in Ambient_genericIn Hammer and Modding · 14 years ago

beecakeIn Hammer and Modding · 14 years ago

"Classic" ArcadeIn Hammer and Modding · 14 years ago

Non-solid command?In Hammer and Modding · 14 years ago

Well, mAL's down.In General Off Topic Discussion · 14 years ago

Portal 2 DLC #1 to be FreeIn News and Announcements · 15 years ago

DLC on the 20th?In Portal 2 Single Player / Coop · 14 years ago

DLC INFORMATION AT 4TH OCTOBER!!!!!!!!!!!!!!!!!In Portal 2 Single Player / Coop · 14 years ago

Help with some basic lighting and animation effectsIn Hammer and Modding · 14 years ago

SuggestionIn Hammer and Modding · 14 years ago

Making False wallsIn Hammer and Modding · 14 years ago

Clip portals?In Hammer and Modding · 14 years ago

Scaling texture shortcut?In Hammer and Modding · 14 years ago

cube entity namingIn Hammer and Modding · 14 years ago

[SP] LasersIn Community Releases · 14 years ago