| .sc2 |
SimCity 2000 City File |
| .sgm |
VisualBoyAdvance Saved Game |
| .sta |
MAME Saved State File |
| .sud |
Super Project Analyzer File |
| .str |
PlayStation Video Stream |
| .ssa |
Sub Station Alpha Subtitle File |
| .sims2pack |
Downloaded Sims 2 Package File |
| .sfs |
Kerbal Space Program Save File |
| .sms |
Sega Master System ROM |
| .srm |
Super Nintendo ROM Save File |
| .sdt |
Siemens Desktop Theme File |
| .sna |
Drive Snapshot Primary Backup File |
| .swc |
Flex Components Archive |
| .sv5 |
BigJig Saved Puzzle |
| .svs |
Game Boy Advance Saved State File |
| .sad |
Black & White Audio File |
| .sprite |
Scratch Sprite File |
| .smzip |
StepMania Package |
| .sgb |
Dawn of War Map File |
| .sab |
ACIS SAB Model File |
| .settings |
Visual Studio Settings File |
| .sc2data |
Blizzard StarCraft 2 Data File |
| .sc2archive |
Blizzard StarCraft 2 Archive File |
| .sc2ma |
StarCraft 2 Map Data File |