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A2b a2b is an abstract train game where you guide trains to their destination without letting them collide with each other. Each game is played on a set of tracks on which trains run at regular intervals. You pick a train and accelerate, brake, or stop as necessary to safely guide it to its destination. Since trains are continously being launched, more than 1 train will want to use the same section of a track, potentially leading to a collision. You must resolve this by making a train wait while you rush another train. As a last resort, you can send a train back to its base.

ACM ACM is a LAN-oriented, multiplayer aerial combat simulation. Players engage in air to air combat against one another using heat seeking missiles and cannons. The program has support for 16, 24, and 32 bit graphics cards.

AirTraffic AirTraffic is a game that puts you into an air traffic controller's hotseat. Planes come into your airspace from various directions; you guide them safely to their final destinations. While not yet complete, the program is under active development; it currently consists of various server programs and a GTK/Gnome client. The client uses GTK/Gnome as its UI. The author welcomes contributions from UI designers and coders as well as individuals with air traffic experience.

Bitlife 'bitlife' implements Conway's Game of Life using boolean logic operations (and, or, not, xor). It does so by blits, thus running a Life game in every bitplane in parallel. Two implementations are available: a proof-of-concept one in Python and a useful one in C.

Civil Civil is a cross-platform, turnbased, networked strategy game that allows players to take part in scenarios set during the American Civil war. It simulates battles on a company level (roughly 100 men).

Dynpet Dynpet is a game that is similar to the Tamagotchi. It is a game in which you take care of a pet.

Empire Empire is a strategy wargame played by a number of people (usually between 4 and 100) on the internet connected to an Empire Server. It combines strategy, tactics as well as economics and diplomacy.

Fireworks 'Fireworkx' is a pyrotechnic eye-candy simulation that explodes in both X and SVGAlib atmospheres.

FooBillard FooBillard is a OpenGL-billard game with realistic physics. It supports 8-ball, 9-ball, carambol and snooker, and both computer opponent and network play. Visual features include reflections on balls, shadow pixmaps, detail switching of balls according to distance, and adjustments for eccentric hits.

Freeciv Strategic game that is more or less related to Civ II, only better.

GL-117 GL-117 is an OpenGL- and SDL-based action flight simulator that provides a random terrain generator, lighting effects, sounds, and joystick support.

GLife Glife is a simulation that uses the concepts found in Artificial Life. Its goal is to provide a limited number of rules, and then watch some sort of "society" emerge. Trends develop as animals interact with the terrain and with each other. This program is an "Artificial Society" program. The rules are placed in the program (and are somewhat customizeable). You then observe what happens; you can also find information on the individual animals or watch specific trends such as "wealth distribution." You place the rules and watch trends and structures emerge. The terrain is a grid, and the circles inside represent the terrain and the animals.

GNOME War Pad VGA Planets is a play-by-email space conquest strategy game, it can be played by 11 players max. This game is being played by strategy fanatics all over the world for some years now, is very addictive and there are several servers on the Internet that host various kinds of this games.

GNU robots You construct a program for a robot, then watch him explore a world. The world has people who can hurt you, objects you can bump into, and food you can eat. The goal of the game is to collect as many prizes as possible before you are killed run out of energy. The robot program is written in a text file, which doesn't limit programmers to a visual interface. However, such an interface (which will generate Scheme code) is also available for use by non-programmers.

GNUKart GNUKart is a clone of old racing games in rear-view. The purpose of this project is to propose a quick multiplayer game, with code designed to be as portable as possible. It does not need a 3D card.

GtkLife GtkLife is a Conway's Life simulator for *nix. It features a modern user interface, a fast Life algorithm, a giant universe size (65536x65536), and a clickable collection of Life patterns

LibTAP 'libTAP' (The Architectural Playground) is a prototyping system for virtual reality and augmented reality applications. It runs on a variety of platforms. RAP (rapid application prototyping) is done through the Lua interface, which mirrors the C++ namespace as closely as possible. libTAP has a small but distinctive feature set, focused on prototyping of realtime 3D simulations.

Libquantum 'libquantum' is a simulation of a quantum computer. It provides an interface for a quantum register and for all important quantum operations. An efficient model for decoherence allows an analysis of quantum computation in a realistic environment. Features include the simulation of arbitrary algorithms, high performance and low memory consumption and interfaces for quantum error correction (QEC) and the density operator formalism. The package includes implementations of Shor's factoring algorithm and Grover's search algorithm.

LinCity You are required to build and maintain a city. You must feed, house, provide jobs and goods for your residents. You can build a sustainable economy with the help of renewable energy and recycling, or you can go for broke and build rockets to escape from a pollution ridden and resource starved planet. It's up to you. Due to the finite resources available in any one place, this is not a game that you can leave for long periods of time. This package provides files common to both the X and SVGALIB versions of the game. To get the actual game binary, install either lincity-x or lincity-svgalib (or both).

Liquidwar Liquid War 5 is a unique multiplayer wargame. Its rules are truely original and have been invented by Thomas Colcombet. You control an army of liquid and have to try and eat your opponents. A single player mode is available, but the game is definitely designed to be multiplayer, and has network support.