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Easter egg in the frankenturret intro!In Portal 2 Single Player / Coop · 13 years ago

[SP] ReboundIn Community Releases · 12 years ago

Pakrat Bik VideosIn Hammer and Modding · 12 years ago

Unsettling thing in Test 15In Portal Single Player · 12 years ago

Prevent Cube Through GratingIn Hammer and Modding · 12 years ago

[PTI] Glasspect RatioIn Community Releases · 12 years ago

I need help I am trying to make a co-op mapIn Hammer and Modding · 12 years ago

[PTI] ThimbleIn Community Releases · 12 years ago

[SP] PortIn Community Releases · 12 years ago

[SP] GubbleIn Community Releases · 13 years ago

Map_LoadModelGuts: Map with no texinfo,(Solved)In Hammer and Modding · 12 years ago

Which bot is the best?In General Off Topic Discussion · 13 years ago

[PTI] Duplicare concitant buxumIn Community Releases · 12 years ago

Swimming in normal waterIn Hammer and Modding · 13 years ago

Where do I find the Cave Johnson images Portal 2 SFMIn General Off Topic Discussion · 12 years ago

WHY is my map not compatible with the workshop?In Hammer and Modding · 12 years ago

Aperature Wants YOU!In General Off Topic Discussion · 12 years ago

How does one lease music from Valve for video projects?In General Off Topic Discussion · 12 years ago

Portal 1 Sounds in a portal two map?In Hammer and Modding · 12 years ago

Force Centered Portals [Solved]In Hammer and Modding · 12 years ago

Isolated FogIn Hammer and Modding · 12 years ago

[SP] PrioritizeIn Community Releases · 12 years ago

[Coop] Even Mho' Power: Part 2 - "Static Discharge"In Community Releases · 12 years ago

[PTI] I'm Doing Science!!!In Community Releases · 12 years ago

Nuclear's Portal 2 LeaderboardsIn General Off Topic Discussion · 12 years ago

Can't play demosIn General Off Topic Discussion · 12 years ago

[SP] L-CircuitsIn Community Releases · 12 years ago

Ellen McLain is baking 5 lucky people a CAKE -- Find out HOWIn General Off Topic Discussion · 12 years ago

How Does the Portal Prop Work?In Hammer and Modding · 12 years ago

How do I make a working skybox?In Hammer and Modding · 12 years ago

WIP Puzzle Creator Showcase ThreadIn Puzzle Creator and Workshop · 13 years ago

Most Random Game I Have Ever SeenIn General Off Topic Discussion · 12 years ago

Brainstone's instancesIn Hammer and Modding · 12 years ago

Flickering "Image"In Hammer and Modding · 12 years ago

BLUEMOD version 2In Community Releases · 12 years ago

Map Won't Load...In Hammer and Modding · 12 years ago

Relaxation vault.In Community Releases · 14 years ago

Need help with packing a scriptIn Hammer and Modding · 12 years ago

Question about Portal 2 3D skyboxesIn Hammer and Modding · 12 years ago

How do I teleport a player between instances?In Hammer and Modding · 12 years ago

nature/water_movingplane texture does not exist for meIn Hammer and Modding · 14 years ago

[PTI] Pseudo ProfundityIn Community Releases · 12 years ago

[PTI] ReversalIn Community Releases · 12 years ago

Cold lightingIn Hammer and Modding · 12 years ago

Coop experiments.In Hammer and Modding · 12 years ago

Gel doesn't paints the bridgeIn Hammer and Modding · 12 years ago

New mod... sort ofIn Hammer and Modding · 12 years ago

[SP] No money for chambers #1In Community Releases · 13 years ago

Steam is downloading Over 9000 Maps - ProblemIn General Off Topic Discussion · 12 years ago

Object Name SymbolsIn Hammer and Modding · 12 years ago