A modern, cross-platform Quake game engine based on FitzQuake.
A cross-platform port of Hexen II game.
A fun realistic multiplayer free-and-open-source first-person-shooter!
A free 3d game for PC that does not limit the player. Fight,Build,Gain
Odamex is a free, cross-platform, modern client-server Doom engine
Cross-breeding a 3D FPS with a fantasy RPG in the world of Hexen
Bots for the Half-Life mod Firearms 3.0 and Day of Defeat 1.3
Open source FPS/RTS Game
Fast small FPS using JOGL and JOAL
A Wii-like game that can be controlled using a Nunchuk or a phone.
Simple 3d Top-Down Shooter & Free 3d Board Game
A ZDoom Frontend