| Drunk Puppy | Developer | |
| DrunkRaccoon | Developer | |
| Drunkain | Developer | |
| Drunlucky | Developer | |
| Druom | Developer | |
| Drury33 | Developer | |
| Drweam | Developer | |
| Dry Cactus | DeveloperPublisher | |
| Dry Cough | Developer | |
| DryBoneX | Developer | |
| Dryn27 | Developer | |
| Dsquared Games | Developer | |
| Dtp entertainment | DeveloperPublisher | |
| Du_Couscous | Developer | |
| Duaik | DeveloperPublisher | |
| Dual | DeveloperPublisher | |
| Dual Effect | Developer | |
| Dual Lasagna | Developer | |
| Dual Wield Software | Developer | |
| Duang! Games, LLC | Developer | |
| DubaDubDee | Developer | |
| Dubomb | Developer | |
| Ducat | Developer | |
| Duck Bear | Developer | |
| Duck Block Games | Developer | |
| DuckDuckGamesInc | Developer | |
| Duck_sanes | Developer | |
| Duckbear Lab | Developer | |
| Duckbridge | Developer | |
| Duckenclaw | Developer | |
| Duckonaut | Developer | |
| DucksOfWar | Developer | |
| Ducksy | Developer | |
| Ducky | Developer | |
| DuckyGames | Developer | |
| Duct Tape Creations | Developer | |
| Dudematepal | Developer | |
| DudlDev | Developer | |
| Dudu | Developer | |
| DuendeonFuego | Developer | |
| Dufgames | DeveloperPublisher | |
| Duia | Developer | |
| Duintronic | Publisher | |
| Duke | Developer | |
| Duke University Medical Center | DeveloperPublisher | |
| Dukebot | Developer | |
| Dukerino | Developer | |
| Dul2Work | Developer | |
| DuleGames | Developer | |
| Dullahan Software | Developer | |
| Dumb Bear Studios | Developer | |
| Dumdodoor | Developer | |
| Dumivid | Developer | |
| Dummy Dojo | Developer | |
| Duna Games | Developer | |
| Dunbar Games | Developer | |
| Duncan Alexander | Developer | |
| Duncan Brown software | Publisher | |
| Duncan Idaho | Developer | |
| Duncan MacDonald | Developer | |
| Duncan Sinclair | Developer | |
| Dune Studio | Developer | |
| DuneWorld | Developer | |
| Dungeon Dwellers Design | Developer | |
| Dungeon Engineer | Developer | |
| Dungeon Entertainment | Publisher | |
| Dungeon of Zaar | Developer | |
| DungeonCrafter | Developer | |
| DungeonMaster_Marty | Developer | |
| DungeoneerDigital | Developer | |
| Dungeonmir | Developer | |
| Dungeons And Rockets | Developer | |
| DungeonsandDadJokes | Developer | |
| Dunkaccino | Developer | |
| DunkelBlume | Developer | |
| Dunster | Developer | |
| Duobix | Developer | |
| Duoplus Software | Developer | |
| Duoxy | Developer | |
| Dupat | Developer | |
| Dupuis | Developer | |
| Dupy | Developer | |
| Duque | Developer | |
| Duranik | DeveloperPublisher | |
| Durbek Nuritdinov | Developer | |
| Durbo | Developer | |
| Durell | Publisher | |
| Durell Software | DeveloperPublisher | |
| Durell Software (Mike A. Richardson) | Developer | |
| Durnathi | Developer | |
| Durz32 | Developer | |
| Dusenberry Martin Racing | Developer | |
| Dushi | Developer | |
| Dusk | Developer | |
| DuskedSky | Developer | |
| Dusko Dimitrijevic | Developer | |
| Dust Scratch Games | Developer | |
| Dustin Auxier | Developer | |
| Dustin Gunn | Developer | |
| Dustin Halsey | Developer | |