| amx | AMX Mod Plugin |
| an2 | Croc Animation |
| ancs | Metroid Prime Animation Data |
| anz | KISS CM3D Model |
| apc | Cryo APC Audio |
| ar | Midtown Madness 2 Game Data |
| arch00 | F.E.A.R. Game Archive |
| archive | Unreal Tournament Localization Data |
| are | Infinity Engine Area Contents |
| arkprofile | ARK: Survival Evolved Player Profile Data |
| asb | Starpoint Gemini 2 Assembly |
| asg | Airport Tycoon Saved Game |
| ash | KoLmafia ASH Script |
| asset | Unity Asset |
| assets | StuntMANIA Assets Data |
| asstrm | Splinter Cell: Blacklist Data |
| awf | Abomination Game Data |
| awreplay | Arena Wars Replay |
| az | Ski Stunt Simulator Animation |
| b2k | Sensible Soccer 2006 Data |
| ba0 | B.O.U.T. Evolution Texture Data |
| ba2 | Bethesda Softworks Archive |
| baa | Twilight Princess Audio Archive |
| baf | The Club Data |
| baf | Battlefield 2 Animation |
| bag | Emperor: Battle for Dune Data |
| bah | Infinity Engine Game Data |
| bam | Infinity Engine Animation |
| bank | Darkest Dungeon Audio Data |
| bar | Age of Mythology Game Data |
| batch | Switchball Data |
| bb3 | BlasterBall 3 Game Data |
| bba | Settlers: Heritage of Kings Game Data |
| bbm | Evasive Action Data |
| bcb | Stolen Game Data |