DEVELOPERS
- D Cruise
- D&M'sK System
- D's Garage 21
- D3 Publisher
- Daft
- Daiei Seisakusho
- Daiki
- Danger Productions
- Daou
- Dark Technologies
- DarkBlack Ltd
- Darkworks
- Data Design
- Data Design Interactive
- Data Design Interactive / ImageBuilder Software, Inc
- Data East
- Data East Corporation
- Data East / Swing! Deutschland
- Data East USA
- Data West
- David A. Palmer Productions
- Davilex
- Dazz
- DB Soft
- DC Studios
- DCE
- DDL
- DDL, Inc
- Deibus Studios
- Delphine Software International
- Dempa Shinbunsha
- Den'Z
- Deniam
- Denki
- Denton Designs
- Dentsû
- Denyusha & Dimps
- Desert Productions
- Designer Software
- Destination Software
- Developer Resources
- Devil's Thumb Entertainment
- Diamond Head
- Diamond Head (KCEO)
- Dice
- Digicube
- Digifloyd
- Digital Creations
- Digital Developments
- Digital Dialect
- Digital Eclipse
- Digital Eclipse Software Inc
- Digital Fiction
- Digital Frontier
- Digital Illusions
- Digital Illusions Canada, Inc
- Digital Illusions CE AB
- Digital Illusions CE, Canada
- Digital Images Design / Tomcat System
- Digital Kids
- DIMPS
- Dimps Corporation
- Dinamic Software
- Dini and Dini Productions
- Director's Cut
- Disco
- Disney Interactive
- Disney Interactive Studios
- Distinctive Developments Ltd
- Distinctive Software
- Distinctive Software, Inc.
- DMA Design
- Doki Denki
- Doki Denki Studio
- Domark
- DoParts
- Dorart
- Double Diamond Sports
- Dragnet
- Dream Creators / D-cruise
- Dream Factory Co., Ltd
- Dream Japan
- Dream On
- DREAM ON STUDIO
- Dreamfactory
- Dreams
- Dreamworks Interactive
- Dreamworks/NCS
- DSI Games
- dtp Young Entertainment AG
- Dual
- Dyna
- Dyna Corporation
- Dynamix