Lights.rad

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lights.rad is a RAD file which is always automatically read by the lighting compilers.

• For an incomplete list of vanilla lights.rad files, see Category:RAD.
• For documentation on how to create and use a lights.rad file, see RAD file.

Note:Default lights.rad files are normally included with Source games, but not GoldSrc games.
Some games, such as Half-Life 2: Deathmatch and Source SDK Base 2013 - Multiplayer, relied upon base Half-Life 2's lights.rad, and no longer have a default lights.rad as of the SteamPipe update, as their new standalone hl2 folder does not contain a lights.rad. Additionally, games like Half-Life 2 contains lights.rad inside an VPK file (like hl2_pak_dir.vpk).