O
| Title | Developer/Publisher | Release Date | Genre | License | Mac OS Versions |
|---|---|---|---|---|---|
| Off-Road Velociraptor Safari | Flashbang Studios | 2011 | Racing | Commercial | 10.6.6 or higher |
| Oh No! More Lemmings | DMA Design | 1993 | Puzzle | Commercial | 6.0.5 - 9 |
| On The Rain-Slick Precipice of Darkness - Episode One | Hothead Games | 2008 | Adventure / RPG | Commercial | 10.5 or higher |
| On The Rain-Slick Precipice of Darkness - Episode Two | Hothead Games | 2008 | Adventure / RPG | Commercial | 10.5 or higher |
| Oni | |||||
| Onverse | |||||
| Oolite | Giles Williams | 2006 | Space Trading | GNU General Public License. | 10.4 or higher |
| Oops! | |||||
| Open Sonic | Alexandre Martins | 2010 | Platform | Open Source | 10.5 or higher |
| OpenArena | |||||
| OpenLieroX | Dark Charlie | 2007 | Action / Strategy | Open Source | 10.3 or higher |
| OpenTTD | |||||
| Operation Desert Storm | |||||
| Orbiter | |||||
| Orbz | |||||
| Osmos | |||||
| OSX SkyFighters 1945 | |||||
| Otis | |||||
| OttoMatic | |||||
| Out of the Park Baseball 10 | |||||
| Out of the Sun | Domark Software | 1994 | Flight Simulator | Commercial | 7 - 9 |
| Ovid the Owl Act I | |||||
| Owl Country | |||||
| Oxyd | Dongleware Verlags | 1992 | Puzzle | Shareware | 6 - 9 |
| Oxyd Extra | Dongleware Verlags | 1996 | Puzzle | Commercial | 7 - 9 |
| Oxyd Magnum | Dongleware Verlags | 1993 | Puzzle | Shareware | 6 - 9 |
| Ozzy Bubbles |
Read more about this topic: List Of Macintosh Games