| stsg | SuperTux Saved Game |
| stuff | Black and White 2 Data File |
| stuff | EVE Online Data File |
| stwm | SuperTux World Map |
| sv1 | RollerCoaster Tycoon Saved Game |
| sv6 | RollerCoaster Tycoon 2 Saved Game |
| svb | Torchlight 2 Saved Game |
| sve | Simutrans Saved Game |
| svs | GameBoy Advance Saved State |
| svt | Torchlight Saved Game |
| swe | NHL 2002 Game Data |
| sww | Anno 2070 Saved Game |
| sxa | Gekido Game Data |
| sxt | Singles Extension |
| syb | Syberia BINK Video |
| syj | Syberia Texture |
| syn | Excessive Speed Data |
| system | Vega Strike Virtual System Data |
| t | TADS 3 Source Code |
| t3 | TADS 3 Compiled Game |
| t3c | TADS 3 Game Configuration |
| t3u | Thief 3: Deadly Shadows Game Archive |
| table | High Heat Baseball 2000 Game Data |
| tah | 3DCG Mod File |
| tbm | Toribash Mod |
| tbn | 3DCG Binary Data |
| td4 | RollerCoaster Tycoon Track |
| td6 | RollerCoaster Tycoon Track Design |
| tdu | The Suffering: Ties That Bind Data |
| te2 | Conquest of the New World Game Data |
| ter | Black and White 2 Terrain Data |
| tew | Wrestling Spirit Game Data |
| tf | Follin Player II Music |
| tf2 | Team Fortress 2 Game Data |
| tfc | Unreal Engine 3 Texture File Cache |