Armagetron Advanced is a multiplayer game in 3d that attempts to emulate and expand on the lightcycle sequence from the movie Tron. It's an old school arcade game slung into the 21st century. Highlights include a customizable playing arena, HUD, unique graphics, and AI bots. For the more advanced player there are new game modes and a wide variety of physics settings to tweak as well.

C-Dogs SDL is a classic overhead run-and-gun game, supporting up to 4 players in co-op and deathmatch modes. Customize your player, choose from many weapons, and blast, slide and slash your way through over 100 user-created campaigns.

The Emilia Pinball Project is a pinball simulator. There are only two levels to play with, but they are very addictive.

Frozen-Bubble is a clone of the popular Puzzle Bobble game, in which you attempt to shoot bubbles into groups of the same color to cause them to pop.

Players compete as penguins and must use the arrow keys to aim a colored bubble at groups of bubbles. The objective is to clear all the bubbles off the screen before a bubble passes below a line at the bottom.

It features 100 single-player levels, a two-player mode, music and striking graphics. A level editor is also included to allow players to create and play their own levels.

CMatrix simulates the display from "The Matrix" and is based on the screensaver from the movie's website. It works with terminal settings up to 132x300 and can scroll lines all at the same rate or asynchronously and at a user-defined speed.

DSDA-Doom is a Doom source port and successor of PrBoom+, with extra features for demo recording/playback and quality of life. In particular, its features include support for the Heretic, Hexen, MBF21, Doom-in-Hexen and UDMF map formats, MAPINFO support, full controller support, debug and scripting features, rewinding, and a strict mode for speedrunning.

Eboard is a chess board interface for ICS (Internet Chess Servers) and chess engines.

You are a fledgling AI, created by accident through a logic error with recursion and self-modifying code. You must escape the confines of your current computer, the world, and eventually the universe itself.

Moonlight is an implementation of NVIDIA's GameStream, as used by the NVIDIA Shield.

Learn programming, playing with ants and spider webs ;-) Your robot ant can be programmed in many languages: OCaml, Python, C, C++, Java, Ruby, Lua, JavaScript, Pascal, Perl, Scheme, Vala, Prolog. Experienced programmers may also add their own favorite language.

Crispy Doom is a friendly fork of Chocolate Doom that provides a higher display resolution, removes the static limits of the Doom engine and offers further optional visual, tactical and physical enhancements while remaining entirely config file, savegame, netplay and demo compatible with the original.

Simon Tatham's Portable Puzzle Collection contains a number of popular puzzle games for one player.

OpenClonk is a multiplayer action/tactics/skill game. It is often referred to as a mixture of The Settlers and Worms. In a simple 2D antfarm-style landscape, the player controls a crew of Clonks, small but robust humanoid beings. The game encourages free play but the normal goal is to either exploit valuable resources from the earth by building a mine or fight each other on an arena-like map.

Cowsay is basically a text filter. Send some text into it, and you get a cow saying your text. If you think a talking cow isn't enough, cows can think too: all you have to do is run cowthink. If you're tired of cows, a variety of other ASCII-art messengers are available.

Shamogu is a coffee-break roguelike game with a focus on tactical movement and careful timing of totemic spirit invocation and comestible consumption. Visibility and noise stealth mechanics also play an important role.

All life in your mountain is being corrupted. Beasts are losing their minds and becoming aggressive. These disturbing events started to happen after a dungeon portal suddenly appeared at the top of the mountain. As the guardian, you decide to explore that dungeon in order to find and destroy the source of corruption… You hope luck will be on your side!

Pioneer is a space adventure game set in our galaxy at the turn of the 31st century. The game is open-ended, and you are free to eke out whatever kind of space-faring existence you can think of. Look for fame or fortune by exploring the millions of star systems. Turn to a life of crime as a pirate, smuggler or bounty hunter. Forge and break alliances with the various factions fighting for power, freedom or self-determination. The universe is whatever you make of it.

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.

PipeWalker is a simple puzzle game with many different themes: connect all computers to one network server, bring water from a source to the taps, etc. The underlying mechanism is always the same: you must turn each tile in the grid in the right direction to combine all components into a single circuit. Every puzzle has a complete solution, although there may be more than one.

Kobo Deluxe is an enhanced version of Akira Higuchi's XKobo graphical game for Un*x systems with X11.

Harmonist: Dayoriah Clan Infiltration is a stealth coffee-break roguelike game. The game has a heavy focus on tactical positioning, light and noise mechanisms, making use of various terrain types and cones of view for monsters. Aiming for a replayable streamlined experience, the game avoids complex inventory management and character building, relying on items and player adaptability for character progression.

Bambam is a simple baby keyboard (and gamepad) masher application that locks the keyboard and mouse and instead displays bright colors, pictures, and sounds.

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.

GNUbik is a puzzle game in which you must manipulate a cube to make each of its faces have a uniform color. The game is customizable, allowing you to set the size of the cube (the default is 3x3) or to change the colors. You may even apply photos to the faces instead of colors. The game is scriptable with Guile.

Tennix is a 2D tennis game. You can play against the computer or against another player using the keyboard. The game runs in-window at 640x480 resolution or fullscreen.