Browse free open source First Person Shooters and projects for Windows and Mac 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.
Classic America's Army
Odamex is a free, cross-platform, modern client-server Doom engine
Free and open source FPS based on Quake III Arena
AssaultCube is a FREE, multiplayer, first-person shooter game.
DOOM / Heretic / Hexen source port with enhanced graphics and UI
A fun realistic multiplayer free-and-open-source first-person-shooter!
first person shooter, space invader
A QuakeWorld package containing everything needed to play QW right now
Open source FPS/RTS Game
3D-Accelerated open-source DOOM engine
If you can't connect your controller to PC, this program will do it.