Aleph One is a free open-source FPS engine based on Marathon 2.  Aleph One (FKA Marathon Open Source Project) is a project that started in the year 2000 when Bungie released the source code for Marathon rigth before Microsoft acquired...

Ported by Aspyr. Lock and load. One blast from destruction, the U.S.S. Voyager is mysteriously transported into a hull space infested with danger. As part of Voyager's elite Hazard Team, you must defend it from a host of scavenging aliens,...

Tenebrae is a modification of the quake source that adds stencil shadows and per pixel lights to quake. Stencil shadows allow for realistic shadow effects on every object in the game world. Per pixel lighting allows you to have fine surface details...

Lo Wang has been working as a Shadow Warrior (a bodyguard and mercenary of sorts) for the powerful Zilla Corporation for years. But when he discovered the evil Zilla's plan to summon monsters from other dimensions and conquer the world, he left...

An FMV shooting gallery game. Take back the streets!

Avara is a 3D sci-fi singleplayer and multiplayer FPS game for Mac.  Players play as mech robots that battle using weapons such as: a laser gun, grenades and guided missiles.  Avara features physics such as jumping, climbing stairs,...

Avara Aftershock is a standalone modification of Avara, made by fans with the blessing of Ambrosia Software. Primarily inspired by Team Fortress, Aftershock features different classes with their own strengths and weaknesses, with a focus on team...

zDoom is a source port of Doom and Doom II that is considered very advanced. It supports Boom's editing extensions, plus all of the extensions made in the version of the Doom engine used in Hexen: Beyond Heretic, as well as...

The ultimate shooting game.  Created from digitized video. Find out who is the fastest gun in your family or group of friends.  - (members.aol.com/jimplan) Registration Information: The password generation algorithm is quite easy...

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...

"The most advanced, the best produced, the most amazing first-person shooter to have ever graced my Mac's screen."   — Jean-Luc Dinsdale, Inside Mac Games    

Mac OS Port of the classic First Person Shooter Duke Nukem 3D. As Duke Nukem you are here to kick ass and chew bubblegum, and you're all out of gum! Sure, it’s crude. Sure, it could be called sexist, and sure, a good part of it...

Quake is a first-person shooter video game, developed by id Software and published by MacSoft in 1997. It is the first game in the Quake series. In the game, players must find their way through various maze-like, medieval environments while battling...