| Filename | Title | Map Size | Climate | File Size |
|---|---|---|---|---|
| obstacle.mpr | Obstacle | 64x64 | Temperate | 5762 |
| oklahom1.mpr | Oklahoma Land Rush (Lg) By "Hollywood" | 96x96 | Temperate | 4671 |
| oneways1.mpr | One Way Street | 96x96 | Temperate | 11709 |
| oremount.mpr | Ore Mountian [Revolution-X aka LongDong | 96x96 | Temperate | 3040 |
| oreplat.mpr | Ore Plateau | 96x96 | Snow | 3510 |
| overlord.mpr | Overlord's Haven | 96x96 | Temperate | 5299 |
