| rpgmvo | RPG Maker MV Encrypted OGG Audio |
| rpgmvp | RPG Maker MV Encrypted PNG Image |
| rpgsave | RPG Maker Saved Game |
| rpkg | Hitman Game Package |
| rpl | Toribash Replay |
| rrs | Road Rash Save File |
| rs2 | RailSim2 Saved Layout |
| rs5 | IonFx Miasmata RS5 Data |
| rsh | Warhammer 40K Texture Data |
| rtz | Quake 2 Eraser Bot Route Data |
| rvdata | RPG Maker VX Data File |
| rvdata2 | RPG Maker VX Ace Data File |
| rvi | Revenant Game Data |
| rvmap | Armed Assault Texture Data |
| rvn | Riven Game Data |
| rvr | Revenant Game Data |
| rw | BVE Trainsim Railway Definition Data |
| rwv | JF-18 Audio Resource |
| rwx | ActiveWorlds RWX Model |
| rx3 | FIFA 12 Game Data |
| rxdata | RPG Maker XP Data |
| s11 | Descent 2 Game Data |
| s2 | Stranded 2 Mapfile |
| s22 | Descent 2 Game Data |
| s2data | StarCraft II Data |
| s2m | Stronghold 2 Map |
| s2ma | StarCraft II Map Data |
| s2mh | StarCraft II Map Header |
| s2mi | StarCraft II Cache |
| s2mv | StarCraft II Map Preview |
| s2z | Heroes of Newerth Game Data |
| s3d | EverQuest Game Data |
| s3dpak | TimeShift Data |
| s3f | Slitherine 3D Model |
| s3m | Scorched 3D Mod |
