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[RELEASE] Portal Prefab packIn Community Releases · 18 years ago

Idea!!In General Off Topic Discussion · 17 years ago

Merry Christmas From ThinkingWithPortalsIn News and Announcements · 17 years ago

I made moving portalsIn Hammer and Modding · 17 years ago

GLaDOS vs Blackbird - A Portal machinimaIn General Off Topic Discussion · 17 years ago

Unlimited cubes Test Chamber 13In Portal Single Player · 17 years ago

SDK Update ReleasedIn News and Announcements · 17 years ago

n00b Q: Starting a map - can't create a Portal ModIn Hammer and Modding · 17 years ago

My first Map: In The DarknessIn Hammer and Modding · 17 years ago

Taking the portal gun off the player?In Hammer and Modding · 17 years ago

Texture errors, Fixed!In Hammer and Modding · 17 years ago

Everyone please readIn General Off Topic Discussion · 17 years ago

Community spotlight videos by LorithadIn General Off Topic Discussion · 17 years ago

Why dont people understand the 4DIn General Off Topic Discussion · 17 years ago

No Story by Theprogram00In Portal Single Player · 17 years ago

How big should one map be?In Hammer and Modding · 17 years ago

Email IssuesIn News and Announcements · 17 years ago

If you're not in IRC, you're missing outIn General Off Topic Discussion · 17 years ago

WoW for BioShockIn General Off Topic Discussion · 17 years ago

Duke Nukem Forever TrailerIn General Off Topic Discussion · 17 years ago

MEDIC!In General Off Topic Discussion · 17 years ago

info_particle_system and HL2 effects problemIn Hammer and Modding · 17 years ago

November Contest WinnerIn News and Announcements · 17 years ago

Flashlight?In Hammer and Modding · 17 years ago

New Map: Sidewinder [WIP]In Hammer and Modding · 17 years ago

Hidden LabIn General Off Topic Discussion · 17 years ago

Stretch your bonus maps list window! (updated with *710)In General Off Topic Discussion · 17 years ago

Making logic_choreographed_scenes for GlaDOSIn Hammer and Modding · 17 years ago

ATTN: nickworksIn General Off Topic Discussion · 17 years ago

Post your desktop!In General Off Topic Discussion · 17 years ago

Map translation problemIn Hammer and Modding · 17 years ago

obtaining input parameter.In Hammer and Modding · 17 years ago

HiIn General Off Topic Discussion · 17 years ago

November Contest Map (beta) [WIP]In Hammer and Modding · 17 years ago

Env Explosion that explodes wherever the WCC isIn Hammer and Modding · 17 years ago

Windows & Macs (and Linux too!)In General Off Topic Discussion · 17 years ago

How do you open .RAR filesIn General Off Topic Discussion · 17 years ago

Door issueIn Hammer and Modding · 17 years ago

Text Doom - My first c++ game.In General Off Topic Discussion · 17 years ago

portal completed in 17 minutes and 50 secondsIn General Off Topic Discussion · 17 years ago

I lol'edIn General Off Topic Discussion · 17 years ago

Source SDK ImprovementsIn Hammer and Modding · 17 years ago

Christmas - Wish ListIn General Off Topic Discussion · 17 years ago

[WIP] ptl_AscensionIn Hammer and Modding · 17 years ago

Music won't playIn Hammer and Modding · 17 years ago

Steam...in linux?In General Off Topic Discussion · 17 years ago

Movement TubesIn Hammer and Modding · 17 years ago

[RELEASE] DaMaGepy 02In Hammer and Modding · 17 years ago

[WIP] Low VoltageIn Hammer and Modding · 17 years ago

Moving Stairs IssueIn Hammer and Modding · 17 years ago