| .rad |
Radar ViewPoint Radar Data |
| .rmf |
Hammer Rich Map Format |
| .sis |
Steam Game Backup Information File |
| .sid |
Steam Game Data Backup File |
| .spr |
Half-Life Sprite File |
| .sim |
Steam Game Backup Information File |
| .smd |
Valve Studiomdl Data File |
| .steamstart |
Valve Steam Start File |
| .stskin |
Steam Skin File |
| .vcd |
Virtual CD |
| .vtf |
Valve Texture File |
| .vmx |
VMware Configuration File |
| .vpk |
Valve Pak |
| .vdf |
Valve Data File |
| .vmf |
Valve Map File |
| .vmt |
Valve Material File |
| .vmf_autosave |
Valve Hammer Editor Autosave File |
| .vmdl |
Valve Source 2 Model File |
| .vmap |
Video Multiple Ad Playlist file, Valve Source 2 Map File |
| .vmap_c |
Valve Source 2 Compiled Map File |
| .vhv |
Valve Source Lighting File |
| .wc |
Valve Hammer Configuration File |
| .ztmp |
Steam Compressed Game Resource File |
| .tapesrcmdl |
TAPEStry Command Language (TCL) script file |