| Dashing Pixels | | Developing Direct X-based games for Windows in Seattle, Washington. |
| David Mullich Home Page | | Interactive entertainment designer/producer. Credits include Harlan Ellison's I Have No Mouth and I Must Scream, Compton's Interactive Encyclopedia, DuckTales, Wilderness and The Prisoner. |
| Dejobaan | | Information about their games for Windows and Palm Pilot. |
| Denki Ltd. | | Develops leisure software for hand-held devices such as the Nintendo Game Boy, as well as WAP enabled mobile devices. Offers company news and recruitment information. |
| Devor Entertainment | | An computer and console game development company located in Houston, TX. Offers game information, downloads, and screenshots. |
| Digital Dialect | | Video game development company which develops new game titles, translates existing games between platforms and licenses 3D game development tools. |
| Dis Software | | Finland based console and PC game developer. Offers project information and downloads. |
| Dragonfly Game Design | | An LLC in Massachusetts dedicated to the design and implementation of new interactive entertainment technology. Offers games, press, media, and news. |
| Dream Design | | A small development team that specialized on high-performance game programming. [English/German] |
| Dynamic Playgrounds | | Titles such as "Mine Field Runner" and "Dynamic Personality Indicator" that have a Techno soundtrack. |
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