| duckmaze | | Puzzle game |
| dunelegacy | | Open source Dune 2 clone |
| dungeon | | Classic game of Dungeon |
| easyrpg-player | | RPG Maker 2000/2003 and EasyRPG games interpreter |
| eboard | | Graphical user interface for playing chess |
| ecwolf | | Advanced port of Wolfenstein 3D |
| einstein-puzzle | | Computer implementation of a puzzle invented by Albert Einstein |
| endless-sky | | Side-scrolling space trading game |
| enigma | | Puzzle game similar to Oxyd/Rock'n'Roll/Marble Madness |
| eternal-lands | | Free 3D fantasy MMORPG |
| etlegacy | | Open source Wolfenstein: Enemy Territory client and server |
| etlegacy-data | | Wolfenstein: Enemy Territory data files for etlegacy |
| etlegacy-server | | Open source Wolfenstein: Enemy Territory server |
| eureka | | Doom/Heretic/Hexen map editor |
| eus-demo | | Eric's Ultimate Solitaire (linux demo) |
| exchess | | Experimental chess engine |
| exchess-book-medium | | Chess opening book for EXchess (medium) |
| exchess-book-small | | Chess opening book for EXchess (small) |
| exult | | Open-source Ultima 7 engine |
| exult-audio | | Digital music and digital wave sound effects data for Exult |
| falcons-eye | | Falcon's Eye NetHack |
| fallingtime | | Arcade game inspired by Fall Down |
| fheroes2 | | Recreation of Heroes of Might and Magic II game engine |
| fillets-ng | | Puzzle game about witty fish saving the world sokoban style |
| fillets-ng-data | | Fish Fillets NG data files |
| finalbattle | | Multiplayer space battle simulation for X |
| fire | | Organic fireworks demo |
| fkiss | | Kisekae viewer |
| flare-engine | | Free Libre Action Roleplaying Engine |
| flare-game | | Fantasy action RPG using the FLARE engine |
| flightgear | | The FlightGear Simulator |
| flightgear-data | | FlightGear Simulator data files |
| fltk-sudoku | | FLTK example Sudoku game creator and solver |
| fna | | Reimplementation of Microsoft XNA Game Studio 4.0 Refresh Libraries |
| fnaify | | Launcher for games using the FNA engine |
| foobillardplus | | Free OpenGL-billard game |
| fortune | | Fortune cookie generator |
| fortune-strfile | | Tool to prepare a fortune database |
| fortunes-calvin | | Fortunes from the famous Calvin & Hobbes comic strips |
| fortunes-de | | German data files for fortune |
| fortunes-futurama | | Fortunes from the Futurama animated TV series |
| fortunes-h2g2 | | Fortunes from Douglas Adams' Hitchhiker's Guide to the Galaxy |
| fortunes-it | | Italian fortunes |
| freecell-solver | | Solves layouts of Freecell and similar variants of Card Solitaire |
| freeciv-manual | | Manuals for old Freeciv version (game, client, and server) |
| freecol | | Turn-based strategy game based on the old game Colonization |
| freedoom | | Free content game for Doom engine |
| freedroid | | Clone of the C64 game Paradroid |
| freesci | | Interpreter for Sierra On-Line's SCI games |
| frotz | | Curses-based interpreter for Infocom-compatible games |
| frozen-bubble | | Pop the frozen bubbles |
| fruit | | Chess playing engine |
| galaxa | | Space game based loosely on Galaga |
| gargoyle | | Graphical player for Interactive Fiction games |
| gate88 | | Deep space intergalactic battle |
| gbrainy | | Brain teaser game and trainer |
| gcompris-qt | | Educational software suite for children aged 2 to 10 |
| gemdropx | | Color puzzle game for X11 similar to Gem Drop |
| gemrb | | Reimplementation of the Infinity Engine used in 2D RPGs by Bioware |
| ggz-client-libs | | GGZ Gaming Zone libraries |
| glaxium | | Space-ship OpenGL shoot them up |
| glickomania | | Clear a board by removing groups of identical, adjacent tiles |
| gltron | | 3D lightcycle game inspired by the movie Tron |
| gnome-mastermind | | Mastermind (the game) |
| gnome-nibbles | | Guide a worm around a maze |
| gnome-sudoku | | Number grid logic puzzle |
| gnuchess | | GNU chess engine |
| gnuchess-book | | Chess opening book for GNU Chess (default) |
| gnuchess4 | | The classic GNU chess |
| gnugo | | Go playing program |
| gogui | | GUI for Go-playing programs |
| golddig | | Fast action game designed for use with X |
| granatier | | Clone of the classic Bomberman game |
| greed | | Strategy game: eat as much as possible |
| gtkballs | | GTK+ clone of Color Lines |
| gtklevel9 | | GTK+ port of the Level 9 text adventure interpreter |
| gtkmagnetic | | Interpreter for text adventures from Magnetic Scrolls |
| hengband | | Rogue-like game derived from Zangband |
| heretic2-demo | | Heretic2 - first person Quake 3D engine based (linux demo) |
| hex-a-hop | | Hexagonal tile-based puzzle game |
| hitori | | Logic game similar to Sudoku |
| holtz | | Engine for the abstract strategy games Zèrtz and Dvonn |
| hugo | | Interactive fiction design system and interpreter |
| hypatia (V) | | 2D RPG game engine written in Python |
| icbm3d | | 3D X11 game of defense |
| icebreaker | | Action-puzzle game involving bouncing penguins |
| imaze | | Multiplayer, networked, action,x 3D maze game |
| InterLOGIC | | Logic/puzzle game based on the old Amiga game Balls |
| ioquake3 | | Open source Quake 3 distribution |
| ioquake3-pk3 | | Newer pk3 files for ioquake3 |
| ioquake3-raspberrypi | | Open source Quake 3 distribution (Raspberry Pi version) |
| iortcw | | Game engine for Return to Castle Wolfenstein |
| ironwail | | High performance QuakeSpasm fork |
| ivan | | Graphical roguelike featuring deep gameplay |
| jetpack | | Arcade action game for X Windows |
| jin | | Graphical client for chess servers |
| jools | | Bejeweled clone |
| julius | | Engine for the classic city building game Caesar III |
| jumpnbump | | Multiplayer platform game with bunnies |
| kajaani-kombat | | Rampart-like multiplayer game set in space |