| .skse |
Skyrim Script Extender Save File |
| .sims3.backup |
The Sims 3 Game Save Backup File |
| .soe |
Star Wars: Shadows of the Empire Save File |
| .skd |
Max Payne Skin Data File |
| .sod |
Spear of Destiny Data File |
| .stage |
Pokémon Type Wild Stage Data File |
| .soundscript |
Rigs of Rods Sound Script File |
| .sment |
StarMade Entity File |
| .smsec |
StarMade Sector File |
| .scskin |
Survivalcraft Skin File |
| .smskin |
StarMade Skin File |
| .sasbx |
Space Agency Sandbox File |
| .sg |
SG-1000 Game ROM File |
| .sbm |
Space Engineers Mod File |
| .shipworld |
Starbound Player Ship File |
| .srb |
Sonic Robo Blast 2 Data File |
| .smod |
Stonehearth Mod File |
| .sv4 |
RollerCoaster Tycoon Saved Game |
| .samp |
Nintendo ADPCM Sound Sample File |
| .sv6 |
RollerCoaster Tycoon 2 Saved Game |
| .swv |
Microsoft Sidewinder Game Voice Settings File |
| .scea |
Aleph One Map File |
| .shpa |
Aleph One Shape File |
| .snda |
Aleph One Sound File |