Section 6
- dab · Dots and Boxes game
- dangen · shoot 'em up game where accurate shooting matters
- dangerball · a 3D ball that periodically extrudes spikes. Ouch!
- darkplaces · an engine for iD software's Quake and related games
- darkplaces-server · an engine for iD software's Quake and related games
- darktransit · screen saver.
- davegnukem · A retro-style 2D scrolling platform shooter
- dbm-fc-solver · memory efficient solving of difficult to verdict Freecell deals.
- DDNet · Starts the DDNet client.
- DDNet-Server · Starts the DDNet server.
- dds · double dummy solver frontend
- deal · bridge hand generator
- dealer · bridge hand generator
- dealer.dpp · preprocessor for dealer scripts
- debugboard · Graphical display of the Go board
- decayscreen · make a screen meltdown.
- decine · Delphine Cinematique engine script decompiler
- deco · draw tacky 70s basement wall panelling
- decompile · Engine script decompiler
- deepstars · screen saver.
- defendguin · A bidirectionally scrolling space game based on Defender.
- degob · Coktel Vision TOT script decompiler
- dekyra · Kyrandia script disassembler
- deluxe · pulsing sequence of stars, circles, and lines.
- demon · cellular automaton.
- demosky · Crystalspace demonstration program
- demosky2 · Crystalspace demonstration program
- deprince · Prince script decompiler
- deriven · Mohawk script disassembler (as used in Riven)
- descent3 · 3D space shooter game
- descumm · SCUMM script disassembler
- desktopfolder · Organize your desktop
- dessert · print a random German adage regeln - print a random German peasant's maxim
- desword2 · Broken Sword II script disassembler
- deusf · do things with wad files
- deutex · do things with wad files
- dfrotz · interpreter for Infocom and other Z-Machine games (dumb interface)
- dgn_comp · NetHack dungeon compiler
- dgn_comp_gnomehack · GnomeHack dungeon compiler
- dhewm3 · Doom 3 engine
- dink · adventure and role-playing game (engine)
- dinkedit · adventure and role-playing game (editor)
- discoball · A dusty, dented disco ball screen saver.
- discrete · discrete map iterative function fractal systems.
- distort · distort the content of the screen in interesting ways
- dizzy · a graphics demo that makes you dizzy using rotating textures
- dlb · NetHack data librarian
- dMagnetic · A Magnetic Scrolls Interpreter
- docbuilder · The DocBuilder Application
- dodgindiamond2 · little arcade game shooter for one or two players
- dolphin-emu · Nintendo GameCube and Wii emulator
- dolphin-emu-nogui · Nintendo GameCube and Wii emulator
- domino-chain · Rearrange dominoes on different platforms to start a chain reaction.
- dominosa · domino puzzle game
- donkey-bolonkey · rescue the donkeys
- doom2-masterlevels · graphical launcher for DOOM II Master Levels
- doomsday · Enhanced source port of Doom, Heretic and Hexen
- doomsday-compat · Enhanced source port of Doom, Heretic and Hexen
- doomsday-server · Doomsday Engine multiplayer daemon
- doomsday-shell-text · Utility for controlling and monitoring Doomsday servers
- dopewars · drug dealing game
- dossizola · Isola game with nice graphics
- downfall · screen saver.
- drascula · classic 2D point and click adventure game
- dreamchess · User interface for XBoard-compatible chess engines
- dreamer · An XBoard-compatible chess engine
- drift · draws drifting recursive fractal cosmic flames
- driftclouds · little fluffy clouds.
- droidbattles · a programming game
- drop4 · the game of drop4
- droste · screen saver.
- dsda-doom · DSDA-Doom, a version of Doom for Unix, Linux and Windows systems
- dsda-heretic · DSDA-Doom, a version of Doom for Unix, Linux and Windows systems
- dsda-hexen · DSDA-Doom, a version of Doom for Unix, Linux and Windows systems
- dvorak7min · Typing tutor for the dvorak keyboard layout
- dymaxionmap · An animation of Buckminster Fuller's unwrapped icosahedral globe.