| ODF |
Battlezone Object Definition File |
game files |
| OGZ |
Cube 2 Map File |
game files |
| OMOD |
Oblivion Mod Archive |
game files |
| OPT |
AGT Game Data File |
game files |
| OSB |
Osu! Storyboard File |
game files |
| OSK |
Osu! Skin File |
game files |
| OSR |
Osu! Replay File |
game files |
| OSU |
Osu! Script |
game files |
| OSZ |
Osu! Beatmap File |
game files |
| OVH |
OMSI Vehicle Configuration File |
game files |
| OVL |
Rollercoaster Tycoon 3 Data File |
game files |