The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- 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)
- Dragon Age (Series) (3 members)
- Dragon Ball (Series) (7 members)
- Dragon Fantasy (Series) (2 members)
- Dragon Quest (Series) (3 members)
- Drakengard (Series) (2 members)
- Dream C Club (Series) (3 members)
- Dreampainters Software (Developer) (1 member)
- DrinkBox Studios (Developer) (1 member)
- DrinkBox Studios (Publisher) (1 member)
- Drinkbox Studios (Developer) (2 members)
- Drinkbox Studios (Publisher) (2 members)
- Driver wake-up delay (Config) (18 members)
- Duels of the Planeswalkers (Series) (4 members)
- Duke Nukem (Series) (2 members)