Portal

''Hello, and welcome to the TCRF wiki article pertaining to unused assets within the computer entertainment software known as "Portal". We hope your brief detention in the relaxation vault has been a pleasant one. Your specimen has been processed and we are now ready to begin the article proper. Before we start, however, keep in mind that although fun and learning are the primary goals of TCRF activities, serious injuries may occur.''

"Sparta" Texture
This odd texture is present in portal/materials/models/props_facemovie/wet_floor_sign, with no matching model.

BLU Briefcase Texture
Present in materials/models/flag is this Team Fortress 2 texture used for the flag in Team Fortress, apparently misplaced here.

v_portalgun2
Present in the portal/materials/models/weapons/v_models/v_portalgun/ directory, probably a texture for a much earlier Portal Gun.

fixed_portal_border
The early fixed portal border texture, seen in many pre-release screenshots, remains in the game files in the portal/materials/signage/ directory.

Red Portal
A red-colored portal, present in portal/materials/models/portals/portal-red-color.vtf. This is the color the orange portal used to have during development. If you turn on the closed captions, you can read "Red Portal Open" whenever you shoot an orange one; a remnant of that stage of development. This misnaming is present in all languages.

To enable it in game (replacing the orange portal), just modify portal/materials/models/portals/portalstaticoverlay_2.vmt to read "$PortalColorTexture" "models/portals/portal-red-color" instead of "$PortalColorTexture" "models/portals/portal-orange-color". Note that the particles around the portal will stay orange.

Unused GLaDOS Voice File
Present in the portal content.gcf, in the portal/sound/aperture_ai directory. It is simply GLaDOS saying "File Deleted".

Unused Portal Particles
In the game's particles files are a different particle system for portals that was never used in the game. It can be enabled by running the game with the -tools argument.

Unused Map Elements
The Portal prefabs included in the Source SDK feature old versions of map elements in Half-Life 2 style. Portal used Half-Life 2 assets in the early stages of development as placeholders.

Tim Larkin
If you noclip to the end sequence, you will find a radio NPC named Tim Larkin. Larkin created the ending cinematic music/sound, and this NPC controls the playing of those sounds. It was named after him in his honor.

(Apparently, Tim didn't know about this!)