OpenMRac is a split-screen racing game. It is a tweaked source release of MultiRacer.  - (GitHub page)

Fly your plane all over the United States and collect keys to rescue Blit from jail.

A "space flight simulator" vers. 1.82 from 1988 (earliest version was in 1985). Popular in education, not entertaining enough to be called a game. This runs in all Mac OS up to and including 9.2.2.

Flight simulators seem to fall into two categories: jet-powered shoot-’em-ups with miraculous capabilities that can save the day in any situation, and more realistic seat-of-the-pants simulations that require real aviation skills and tactical...

Play Out of the Park Baseball, the award-winning baseball management simulation game! Do you enjoy fantasy baseball? Do you think you'd make a pretty good baseball general manager? Do you wish you could do a little...

A military strategy wargame focusing on the African desert campaign of legendary Erwin Rommel; specifically, the period between November and December, 1941 when Rommel's offensive is driven close to the Suez Canal and American supplies have...

Naoki Takahashi's `NScripter' is a popular Japanese game engine used for both commercial and free visual novels.  It attained popularity due to its liberal terms of use and relative simplicity.  However, it is closed source...

Onyx is a game of sexual exploration designed for two to six consenting adults. Players are asked to perform all kinds of intimate actions, from mild to kinky. As the game progresses, so does the action! Play with people you are intimate with--or...

Otiru means “to fall from a height” in Japanese. Select New Game from the File menu. You will start up in the air, outside the playfield, pointing to it. You will immdiately begin moving in some direction.