High performance animated desktop background setter for X11 that won't set your CPU on fire, drain your laptop battery, or lower video game FPS.

Dungeon Crawl Stone Soup (also known as "Crawl" or DCSS for short) is a roguelike adventure through dungeons filled with dangerous monsters in a quest to find the mystifyingly fabulous Orb of Zot.

This is an open-source port of the Serious Engine from Serious Sam: The First Encounter and Serious Sam: The Second Encounter. To run, you must put your official game data, Levels and Help in ~/.local/share/Serious-Engine/serioussam,serioussamse/gamedata/.

Redeal is a deal generator written in Python. It outputs deals satisfying whatever conditions you specify --- deals with a double void, deals with a strong 2♣ opener opposite a yarborough, etc. Using Bo Haglund's double dummy solver, it can even solve the hands it has generated for you.

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.

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

Warzone 2100 offers campaign, multi-player, and single-player skirmish modes. An extensive tech tree with over 400 different technologies, combined with the unit design system, allows for a wide variety of possible units and tactics.

This package provides a collection of solitaire games: kaces, kcanfield, kcribbage, kdominos, kklondike, kmcarlo, kmontana, kslyfox, kspider, ktabby, kthieves, ktowers, xmille and xreversi.

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.

SuperTux is a classic 2D jump'n run sidescroller game in a style similar to the original Super Mario games.

Battle Tanks (also known as "btanks") is a funny battle game, where you can choose one of three vehicles and eliminate your enemy using the whole arsenal of weapons. It has original cartoon-like graphics and cool music, it’s fun and dynamic, it has several network modes for deathmatch and cooperative.

The original Colossal Cave Adventure from 1976 was the origin of all text adventures, dungeon-crawl (computer) games, and computer-hosted roleplaying games. This is a forward port of the last version released by Crowther & Woods, its original authors, in 1995. It has been known as ``adventure 2.5'' and ``430-point adventure''.

Tetzle is a jigsaw puzzle game that uses tetrominoes for the pieces. Any image can be imported and used to create puzzles with a wide range of sizes. Games are saved automatically, and you can select between currently in progress games.

GNU Go is a program that plays the game of Go, in which players place stones on a grid to form territory or capture other stones. While it can be played directly from the terminal, rendered in ASCII characters, it is also possible to play GNU Go with 3rd party graphical interfaces or even in Emacs. It supports the standard game storage format (SGF, Smart Game Format) and inter-process communication format (GMP, Go Modem Protocol).

The Powder Toy is a free physics sandbox game, which simulates air pressure and velocity, heat, gravity and a countless number of interactions between different substances! The game provides you with various building materials, liquids, gases and electronic components which can be used to construct complex machines, guns, bombs, realistic terrains and almost anything else. You can then mine them and watch cool explosions, add intricate wirings, play with little stickmen or operate your machine.

Woof! is a continuation of the MBF lineage of Doom source ports, with modern features such as dynamic resolution scaling, uncapped framerates, adjustable field of view, 3D audio with HRTF and 7.1 surround sound support, and modern gamepad features including rumble, gyro, and flick stick support. Supports the new MBF21 format, as well as the MUSINFO, UMAPINFO, DEHEXTRA, and DSDHacked specifictions.

Yamagi Quake II is an enhanced client for id Software's Quake II. The main focus is an unchanged single player experience like back in 1997, thus the gameplay and the graphics are unaltered. However the user may use one of the unofficial retexturing packs. In comparison with the official client, over 1000 bugs were fixed and an extensive code audit done, making Yamagi Quake II one of the most solid Quake II implementations available.

Fizmo is a console-based Z-machine interpreter. It is used to play interactive fiction, also known as text adventures, which were implemented either by Infocom or created using the Inform compiler.

Freedroid RPG is an RPG (Role-Playing Game) with isometric graphics. The game tells the story of a world destroyed by a conflict between robots and their human masters. To restore peace to humankind, the player must complete numerous quests while fighting off rebelling robots---either by taking control of them, or by simply blasting them to pieces with melee and ranged weapons in real-time combat.

This package provides fuzzylite, a fuzzy logic control library which allows one to easily create fuzzy logic controllers in a few steps utilizing object-oriented programming.

GNU Typist is a universal typing tutor. It can be used to learn and practice touch-typing. Several tutorials are included; in addition to tutorials for the standard QWERTY layout, there are also tutorials for the alternative layouts Dvorak and Colemak, as well as for the numpad. Tutorials are primarily in English, however some in other languages are provided.

This is a clone of the classic game BurgerTime. In it, you play the part of a chef who must create burgers by stepping repeatedly on the ingredients until they fall into place. And to make things more complicated, you also must avoid evil animate food items while performing this task, with nothing but your trusty pepper shaker to protect you.

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

The goal of this logic game is to open all cards in a 6x6 grid, using a number of hints as to their relative position. The game idea is attributed to Albert Einstein.