| tgq | Dungeon Keeper 2 Game Movie |
| tgv | Need for Speed In-game Video |
| tgx | Stronghold Crusader TGX Image |
| thf | Reckless Thief Level Data |
| tiger | Tomb Raider Game Data |
| tik | Heavy Metal F.A.K.K. 2 TIKI Model |
| tiz | Infinity Engine Compressed Tileset |
| tja | Taikojiro Song Map |
| tjc | Taikojiro Song Map Sequence |
| tkr | Tinker Custom Level |
| tlk | Bioware Talk Table |
| tlnc | Splinter Cell: Double Agent Data |
| tmcl | Dead or Alive 5 Texture Map |
| tmo | 3DCG Animation and Pose Data |
| tmod | Terraria Mod |
| tni | Virtua Tennis Data |
| toc | World of Warcraft Add-on TOC |
| tp4 | RollerCoaster Tycoon Track Picture |
| tqm | Titan Quest Mod Manager File |
| tr2 | Tomb Raider 2 Game Data |
| tre | Star Wars Galaxies TRE Archive |
| trf | Train Simulator Traffic Pattern |
| trusave | Tomb Raider: Underworld Saved Game |
| ts1 | VirtualBus Texture Description |
| ts4script | The Sims 4 Script |
| tso | 3DCG Model Data |
| tsr | TSR Launcher Data |
| ttarch | Telltale Games Archive |
| ttarch2 | The Walking Dead: Season Two Game Data |
| ttg | Red Alert 3 Game Data |
