| s3f | Slitherine 3D Model |
| s3m | Scorched 3D Mod |
| s3t | Scorched 3D Tankpack |
| s4m | SWAT 4 Map Data |
| s5x | Settlers: Heritage of Kings Game Data |
| sabl | Call of Duty: Black Ops II Game Data |
| sabs | Call of Duty: Black Ops II Sound Archive |
| sak | Postal Game Data |
| sami | Grand Theft Auto San Andres Mod Installer File |
| san | Rebel Assault 2: The Hidden Empire Data |
| saw | Living Scenes Jigsaw Puzzles Data |
| sb0 | Rainbow Six 3: Raven Shield Game Data |
| sbg | Company of Heroes Map |
| sc2assets | StarCraft 2 Assets Data |
| sc2bank | StarCraft 2 Bank Data |
| sc2data | StarCraft II Data |
| sc2locale | StarCraft 2 Localization Data |
| sc2map | StarCraft 2 Map Data |
| sc2mod | StarCraft 2 Modification Package |
| sc2replay | StarCraft 2 Replay Data |
| sc2save | StarCraft 2 Saved Game |
| sc2scene | StarCraft II Cut Scene |
| sc3 | SimCity 3000 Saved City |
| sc4 | RollerCoaster Tycoon Scenario Data |
| sc4desc | SimCity 4 Description |
| sc4lot | SimCity 4 Lot Data |
| sc4model | SimCity 4 Model |
| sc4path | SimCity 4 Network Paths Data |
| sc6 | RollerCoaster Tycoon 2 Scenario |
| scea | Aleph One Map Data |
| scene | Antibody Level Data |
| scf | FShell Mission Success Condition Format Data |
| schem | Minecraft Schematic Data |
| schematic | MCEdit Schematic |
| sclvl | Scritter's Nest Game Level Data |