Odamex is a modification of the Doom engine that allows players to easily join servers dedicated to playing Doom online.

FreeOrion is a turn-based space empire and galactic conquest (4X) computer game being designed and built by the FreeOrion project. Control an empire with the goal of exploring the galaxy, expanding your territory, exploiting the resources, and exterminating rival alien empires. FreeOrion is inspired by the tradition of the Master of Orion games, but is not a clone or remake of that series or any other game.

HyperRogue is a game in which the player collects treasures and fights monsters -- rogue-like but for the fact that it is played on the hyperbolic plane and not in euclidean space.

In HyperRogue, the player can move through different parts of the world, which are home to particular creatures and may be subject to their own rules of "physics".

While the game can use ASCII characters to display the the classical rogue symbols, it still needs graphics to render the non-euclidean world.

JGRPP is a collection of features and other modifications applied to OpenTTD. It's a separate version of the game which can be installed and played alongside the standard game, not a loadable mod (NewGRF, script, or so on).

This is mainly intended to be used by players who are already familiar with the standard game and how to play it. It is not aimed at beginner/novice players. Some features and settings are there for very experienced players and so may have a steep learning curve.

Barony is a first-person roguelike role-playing game with cooperative play. The player must descend a dark dungeon and destroy an undead lich while avoiding traps and fighting monsters. The game features randomly generated dungeons, 13 character classes, hundreds of items and artifacts, and cooperative multiplayer for up to four players. This package does not provide the game assets.

Trigger-rally is a 3D rally simulation with great physics for drifting on over 200 maps. Different terrain materials like dirt, asphalt, sand, ice, etc. and various weather, light, and fog conditions give this rally simulation the edge over many other games. You need to make it through the maps in often tight time limits and can further improve by beating the recorded high scores. All attached single races must be finished in time in order to win an event, unlocking additional events and cars. Most maps are equipped with spoken co-driver notes and co-driver icons.

Space is a vast area, an unbounded territory where it seems there is a room for everybody, but reversal of fortune put things differently. The hordes of hostile creatures crawled out from the dark corners of the universe, craving to conquer your homeland. Their force is compelling, their legions are interminable. However, humans didn't give up without a final showdown and put their best pilot to fight back. These malicious invaders chose the wrong galaxy to conquer and you are to prove it! Go ahead and make alien aggressors regret their insolence.

The goal of the FlightGear project is to create a sophisticated flight simulator framework for use in research or academic environments, pilot training, as an industry engineering tool, for DIY-ers to pursue their favorite interesting flight simulation idea, and last but certainly not least as a fun, realistic, and challenging desktop flight simulator.

Leela-zero is a Go engine with no human-provided knowledge, modeled after the AlphaGo Zero paper. The current best network weights file for the engine can be downloaded from https://zero.sjeng.org/best-network.

Slime Volley is a 2D arcade-oriented volleyball simulation, in the spirit of some Java games of the same name.

Two teams, 1-3 players each, try to be the first to get 10 points. This happens when the one ball touches the floor on the other side of the net. There can be 1 to 8 balls in game. Once one ball touches the ground, the set ends and all balls are served again.

Dr. Robotnik's Ring Racers is a kart racing game drawing inspiration from ``anti-gravity'' racers, fighting games, and traditional-style kart racing. Ring Racers is designed with an emphasis on player agency in the face of highly technical game-play challenges in both single-player and online multiplayer modes.

This package provides the game data, images, and music of the game Superfluous Returnz.

This package contains the non-functional data for the Speed Dreams racing game.

Grue Hunter is a text adventure game written in Perl. You must make your way through an underground cave system in search of the Grue. Can you capture it and get out alive?

Red Eclipse is an arena shooter, created from the Cube2 engine. Offering an innovative parkour system and distinct but all potent weapons, Red Eclipse provides fast paced and accessible gameplay.

You are a robot moving around in a realm filled with ASCII characters. Examine humorously described though useless items as you search for a kitten among them. The theme of this Zen simulation is continued in its documentation.

Li-Ri is a game in which you drive a wooden toy steam locomotive across many levels and collect all the coaches to win.

Marble Marcher is a video game that uses a fractal physics engine and fully procedural rendering to produce beautiful and unique gameplay. The game is played on the surface of evolving fractals. The goal of the game is to get your marble to the flag as quickly as possible. But be careful not to fall off the level or get crushed by the fractal! There are 24 levels to unlock.

M.A.R.S. is a 2D space shooter with pretty visual effects and attractive physics. Players can battle each other or computer controlled enemies in different game modes such as space ball, death match, team death match, cannon keep, and grave-itation pit.

Unknown Horizons is a 2D realtime strategy simulation with an emphasis on economy and city building. Expand your small settlement to a strong and wealthy colony, collect taxes and supply your inhabitants with valuable goods. Increase your power with a well balanced economy and with strategic trade and diplomacy.

GemRB (Game Engine Made with preRendered Background) is a portable reimplementation of the Infinity Engine that underpinned Baldur's Gate, Icewind Dale and Planescape: Torment. It sports a cleaner design, greater extensibility and several innovations.

Enigma is a puzzle game with 550 unique levels. The object of the game is to find and uncover pairs of identically colored ‘Oxyd’ stones. Simple? Yes. Easy? Certainly not! Hidden traps, vast mazes, laser beams, and most of all, countless hairy puzzles usually block your direct way to the Oxyd stones. Enigma’s game objects (and there are hundreds of them, lest you get bored) interact in many unexpected ways, and since many of them follow the laws of physics (Enigma’s special laws of physics, that is), controlling them with the mouse isn’t always trivial.

Anarch is a small, completely public domain, 90s-style Doom clone shooter game.

Bastet (short for Bastard Tetris) is a simple ncurses-based falling brick game. Unlike normal Tetris, Bastet does not choose the next brick at random. Instead, it uses a special algorithm to choose the worst brick possible.

Playing bastet can be a painful experience, especially if you usually make canyons and wait for the long I-shaped block to clear four rows at a time.