Open source First person shooters

Alien Arena

Alien Arena is a fast paced, furious frag fest with arenas ranging from the small, to the massive. (GPL)

Linux - Windows

BZFlag

BZFlag is a free online multiplayer cross-platform open source 3D tank battle game. (LGPL)

Linux - FreeBSD - Windows

OpenArena

OpenArena is an open-source content package for Quake III Arena licensed under the GPL, effectively creating a free stand-alone game. (GPL)

Linux - FreeBSD - Windows - MAC OS X

Sauerbraten

Sauerbraten (a.k.a. Cube 2) is a free multiplayer and singleplayer first person shooter, built as a major redesign of the Cube FPS. (GPL)

Linux - FreeBSD - Windows - MAC OS X

Smokin Guns

Smokin Guns is a first-person shooter situated in a semi-realistic simulation of the American Old West's atmosphere. (GPL)

Linux - Windows

Unvanquished

Unvanquished is a fast-paced, futuristic FPS with RTS elements, pitting technologically advanced humans against hordes of highly adaptable aliens. The player can choose from either team, providing a fresh gameplay experience on both sides of the conflict. (GPL)

Linux - Windows - MAC OS X

Warsow

Warsow is set in a futuristic cartoonish world where rocketlauncher-wielding pigs and lasergun-carrying cyberpunks roam the streets. It is a completely free, fast-paced first-person shooter for Windows, Linux, and Mac OS X. (GPL)

Linux - Windows - MAC OS X

Xonotic

Xonotic is a free and fast-paced first person shooter for Linux, Mac, and Windows. It combines addictive, arena-style gameplay with rapid movement and a wide array of weapons. (GPL)

Linux - Windows - MAC OS X

8 applications