Program Explanation Ported from Windows95 to Macintosh. For details see here, please. There are kinds of application files: QuickDraw edition Ore Buster No special extensions needed. Can play in window mode. Although it can be...

Ophiuchus is a side scrolling action game based on a lunar environment.

One on One is a basketball simulation game for very early Macintosh.  Altough it's B&W, One on One features realistic sound effects and original gameplay.  You control your character using the mouse and jump to shoot (or to block)...

For devotees of fantasy role-playing adventure comes OrbQuest: The Search for Seven Wards. You seek a magical orb shattered into seven parts, the Seven Wards, which must be gathered from far and wide to restore the orb and defeat evil. The Search...

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...

The objective of Oilcap Pro is to keep the oil flowing for as long as possible by placing down pipe links to direct its flow. Registration Information: Click the QUIT button then on the Order Form screen type the '$'...

RUNES is a true brain twister for those who love solving logic puzzles. Marcus Flavius is a Roman scholar who has been sent by the Senate of Rome to discover the secret of the Oracle of Runes. To accomplish this, Marcus must solve each of the...

Osmos is a game where the player controls a substance in an enclosed environment, reminiscent of flOw. By touching smaller objects, they can be absorbed, merging to create a larger substance. The substance is controlled through the mouse...

Oil Tycoon is a game where you are the head of a oil company and you can dig, sell oil, and buy tankers to transport it.  But beware!  An unlucky spot to dog may mean salt water instead of oil, or a crashed tanker and thousands of dollars...

Write, design, and act out your own dramatic works with Opening Night! Featuring dozens of characters, voices, settings and props, you can script and watch your very own stage presentation in just a few clicks.    via...

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.

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...

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...