This has been the tagline of Armagetron, since, well, a very long time, and is probably the shortest and most accurate description possible. Tron was an arcade game based on the movie of the same name, re ...

Aleph One is an open-source descendant of Bungie's  Marathon 2  first-person 3D shooting game. A1 plays Marathon 2, Infinity, and 3rd-party content on a wide array of platforms, with (optional) OpenGL rende ...

OpenSource OpenGL Multiplayer Multiplatform Battle Zone capture the Flag. 3D first person Tank Simulation.

Cube is an open source multiplayer and singleplayer first person shooter game built on an entirely new and very unconventional engine. Cube is a landscape-style engine that pretends to be an indoor FPS engine, which comb ...

The FlightGear flight simulator project is an open-source, multi-platform, cooperative flight simulator development project. Source code for the entire project is available and licensed under the GNU General Public Licen ...

The Battle for Wesnoth is a turn-based strategy game with a fantasy theme.

Build up a great army, gradually turning raw recruits into hardened veterans. In later games, recall your toughest warriors and form ...

Welcome to Zombies, a turn-based game where the only goal is to outlast and destroy the zombies before they do the same to you. Can you save humanity from being overrun? Zombies is free and open-source. ...