Browse free open source First Person Shooters and projects for Linux below. Use the toggles on the left to filter open source First Person Shooters by OS, license, language, programming language, and project status.
A modern, cross-platform Quake game engine based on FitzQuake.
A cross-platform port of Hexen II game.
Free and open source FPS based on Quake III Arena
DOOM / Heretic / Hexen source port with enhanced graphics and UI
Classic America's Army
AssaultCube is a FREE, multiplayer, first-person shooter game.
Odamex is a free, cross-platform, modern client-server Doom engine
Combat Flight Simulator for LINUX. WW2. Network and VOIP. Open-source.
Battlefield bad company 2 Master server emulator + Server R34
FreeCS is a free-software reimplementation of Counter-Strike 1.5.