"ok: A sheep game" is a procedurally generated, real time strategy RPG game prototype made by @that-ben in early 2021 for B&W Macs in which you incarnate a shepherd, rescuing lost sheep and bringing them back to your house. ...

Oberin is both the name of a MMORPG for Macintosh and the fantasy world in which it takes place. Wield a sword, bow, or other weapon, or take advantage of magic spells and potions. Go on adventures with other Oberin players. Oberin has its...

OpenArena is a free, open source and free 3D first person shooter. The first public version was released on August 19, 2005, the day after the id Tech 3 source code was released under GPLv2 and also on the last day of Quake Expo 2005. The game is...

Otto Matic sees you controlling a robot, tasked with saving humanity from an alien invasion. This 3D action platformer dons a 1960s Sci-fi theme, boasting visually varied levels that blend third person shooting and rocket jumping together into a...

Oxyd is a popular 2D puzzle game from the early 90's in which you roll a marble to trigger switches, collect items and bash things.  The goal in Oxyd is to activate the oxygen generators (called Oxyds) by touching them.  Oxyd was first...

Ported by Rockstar Games. A dark future. An uncertain past. No one left to trust. An intense action anime thriller comes to life in Oni. As an elite member of the tech-crimes task force, Konoko is an agent on a mission to fight the evil...

Operation Neptune is an educational game for children 5 to 9 featuring math solving problems with a submarine storyline.    

Someone has broken into the Museum of the History of Cypriot Coinage and all the rare coins have mysteriously vanished. Your mission is to travel back in time with your time machine to recover all 100 missing coins. In your quest you will have the...

On-The-Contrary is one of the first games on Macintosh and certainly the first of the memory genre on Mac, dating back to May 25th, 1984, only 4 months after the very first Macintosh was released.  In the game On-the-Contrary, each player (up...