Half-Life: Source Sky List
This is a list of skies available in Half-Life: Source and Half-Life Deathmatch: Source, along with pictures of each skybox. The light_environment settings listed (Ideal Sun Angle, Ideal Brightness, etc) are suggestions based on settings used in official maps; other values may also be appropriate. To test skies in singleplayer without recompiling the map, bring up the console and enter sv_skyname <sky_name>. Quicksave the game, load it again and the old skybox should be temporarily replaced with the new one.
These skyboxes are available in  Half-Life: Source,
 Half-Life: Source,  Half-Life Deathmatch: Source, and mods utilizing the
 Half-Life Deathmatch: Source, and mods utilizing the  Half-Life: Source content. These skies are NOT HDR capable.
 Half-Life: Source content. These skies are NOT HDR capable.
Unused Skies
These skyboxes exist in the Half-Life: Source game files but are unused in game. They are available in  Half-Life: Source,
 Half-Life: Source,  Half-Life Deathmatch: Source, and mods utilizing the
 Half-Life Deathmatch: Source, and mods utilizing the  Half-Life: Source content. Skies from
 Half-Life: Source content. Skies from  Team Fortress Classic,
 Team Fortress Classic,  Counter-Strike and
 Counter-Strike and  Deathmatch Classic are present in the game files.
 Deathmatch Classic are present in the game files.
Some light_environment entries from GoldSrc skybox list may function with these, but brightness values will need to be adjusted.
| Environment articles: | |
|---|---|
| Skies and environment maps |  Source: Skybox (2D) • Skybox (3D) • HDR Skies • Skybox with Terragen • Skybox with Terragen - Advanced • List of skies | 
| Terrain and displacement mapping | Displacements • Creating Holes in Displacements • Digital Elevation Models • Creating custom terrain with Worldmachine | 











































































