Celestia is a free real-time space simulation that lets you experience our universe in three dimensions.

Gltron is inspired by the movie TRON. Or more exactly, by all the games that where inspired by the movie TRON.

Combat takes place in a rectangular arena. You steer a futuristic bike, called a lightcycle, that leaves behind a trail that acts as a wall. Your goal is to force the other players to crash into a wall and be the last player alive.

Tux Racer lets you take on the role of Tux the Linux Penguin as he races down steep, snow-covered mountains. Enter cups and compete to win the title! Tux Racer includes a variety of options for gameplay, including the ability to race courses in fog, at night, and under high winds.

BZFlag is a multiplayer 3D tank battle game. It was one of the most popular games available on Silicon Graphics machines.

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 License.

An alternate ascii/2D/3D UI for nethack using SDL and OpenGL, it's all about choice.

BillardGL is an OpenGL pool billiard simulation, which was developed within the scope of our course "Computergraphics" at the University of Freiburg (Germany). BillardGL is published under the GPL and is available for download for Windows and Linux.

Egoboo is a 3d dungeon crawling adventure in the spirit of NetHack.

OpenGL is a standard for high performance 3D graphics. These programs demonstrate the OpenGL capabilities of your computer and provide a suite of programs for testing and benchmarking.

Trackballs is a simple game similar to the classical game Marble Madness on the Amiga in the 80's.