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.

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.

UltraStar Deluxe (USDX) is a karaoke game. It allows up to six players to sing along with music using microphones in order to score points, depending on the pitch of the voice and the rhythm of singing.

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

FreeRCT is a game that captures the look and feel of the popular games RollerCoaster Tycoon 1 and 2, graphics- and gameplay-wise.

In this game, you play as a manager of a theme park, allowing you to make a park of your dreams. The list of responsibilities includes managing staff, finances, landscaping, and most importantly: rides. Good managers follow the principle of prioritizing the guests' happiness with a well-maintained park. Should they go unwise, a theme park plunge into chaos with vandalizing guests and unsafe rides. Which path will you take?

Stockfish is a very strong chess engine. It is much stronger than the best human chess grandmasters. It can be used with UCI-compatible GUIs like ChessX.

ManaPlus is a 2D MMORPG client for game servers. It is the only fully supported client for The mana world, Evol Online and Land of fire.

QCheckers, formerly known as KCheckers, is a is a Qt version of the classic boardgame checkers (also known as draughts).

Curse of War is a fast-paced action strategy game originally implemented using ncurses user interface. An SDL graphical version is also available.

LTris is a tetris clone: differently shaped blocks are falling down the rectangular playing field and can be moved sideways or rotated by 90 degree units with the aim of building lines without gaps which then disappear (causing any block above the deleted line to fall down). LTris has three game modes: In Classic you play until the stack of blocks reaches the top of the playing field and no new blocks can enter. In Figures the playing field is reset to a new figure each level and later on tiles and lines suddenly appear. In Multiplayer up to three players (either human or CPU) compete with each other sending removed lines to all opponents. There is also a Demo mode in which you can watch your CPU playing while enjoying a cup of tea!

Cockatrice is a program for playing tabletop card games over a network. Its server design prevents users from manipulating the game for unfair advantage. The client also provides a single-player mode, which allows users to brew while offline.

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.

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).

Fish Fillets NG is strictly a puzzle game. The goal in every of the seventy levels is always the same: find a safe way out. The fish utter witty remarks about their surroundings, the various inhabitants of their underwater realm quarrel among themselves or comment on the efforts of your fish. The whole game is accompanied by quiet, comforting music.

Teeworlds is an online multiplayer game. Battle with up to 16 players in a variety of game modes, including Team Deathmatch and Capture The Flag. You can even design your own maps!

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.

Quakespasm is a modern engine for id software's Quake 1. It includes support for 64 bit CPUs, custom music playback, a new sound driver, some graphical niceities, and numerous bug-fixes and other improvements.

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

GNOME 2048 provides a 2D grid for playing 2048, a single-player sliding tile puzzle game. The objective of the game is to merge together adjacent tiles of the same number until the sum of 2048 is achieved in one tile.

Speed Dreams is a car racing simulator featuring high-quality 3D graphics and an accurate physics engine, aiming for maximum realism. Initially forked from TORCS, it features improvements to the graphics and physics simulation, and supports modern input methods such as gamepads by use of the SDL library. It features more than 20 tracks and more than 80 cars to race with. Extra (freely licensed) assets can be downloaded via the in-game download manager.

SuperTuxKart is a 3D kart racing game, with a focus on having fun over realism. You can play with up to 4 friends on one PC, racing against each other or just trying to beat the computer; single-player mode is also available.

An emulator implementing enough of DOS to run ZZT and Super ZZT on modern systems.

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.

vcmi is an implementation of the Heroes of Might and Magic III game engine. It requires assets and game resources to play; it will look for them at ~/.local/share/vcmi folder.