The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Deep Silver (Publisher) (23 members)
- Def Jam (Series) (2 members)
- Default resolution: 1920x1080 (Config) (2 members)
- Default resolution: 720x576 (Config) (0 members)
- Default settings repeated (Config) (69 members)
- Degica (Publisher) (2 members)
- Demiurge Studios (Developer) (5 members)
- Dennaton Games (Developer) (2 members)
- Developers (368 members)
- Devil's Details (Developer) (2 members)
- Devil May Cry (Series) (3 members)
- Devolver Digital (Publisher) (5 members)
- Die Gute Fabrik (Developer) (1 member)
- Die Gute Fabrik (Publisher) (1 member)
- Different Cloth (Developer) (1 member)
- Different Tuna (Publisher) (1 member)
- Digital Eclipse (Developer) (3 members)
- Digital Extremes (Developer) (3 members)
- Digital Leisure (Developer) (4 members)
- Digital Leisure (Publisher) (8 members)
- Digital Reality (Developer) (3 members)
- Digital Reality (Publisher) (5 members)
- Dimensional Ink Games (Developer) (1 member)
- Dimps (Developer) (10 members)
- Dirt (Series) (4 members)
- Disable ZCull occlusion queries: On (Config) (6 members)
- Disable vertex cache: On (Config) (14 members)
- Disgaea (Series) (3 members)
- Disney Infinity (Series) (3 members)
- Disney Interactive Studios (Publisher) (26 members)
- Disney Sing It (Series) (5 members)
- Disruptive Games (Developer) (1 member)
- Doctor Entertainment (Developer) (1 member)
- Doctor Entertainment (Publisher) (1 member)
- Doko Demo Issho (Series) (1 member)
- Dontnod Entertainment (Developer) (1 member)
- Doodle (Series) (3 members)
- Doom (Series) (2 members)
- Dorasu (Developer) (1 member)
- Dorasu (Publisher) (1 member)
- DoubleTap Games (Developer) (1 member)
- Double Eleven (Developer) (2 members)
- Double Eleven (Publisher) (2 members)
- Double Fine Productions (Developer) (5 members)
- Double Helix Games (Developer) (6 members)
- Doublesix (Developer) (4 members)
- Doublesix (Publisher) (1 member)
- Doublesix Video Games (Publisher) (1 member)
- Dragon's Dogma (Series) (1 member)
- Dragon's Lair (Series) (2 members)