Dream Design - A small development team that specialized on high-performance game programming. [English/German] - http://www.dream-d-sign.de/
Dragonfly Game Design - An LLC in Massachusetts dedicated to the design and implementation of new interactive entertainment technology. Offers games, press, media, and news. - http://www.dragonflygamedesign.com/
Dejobaan - Information about their games for Windows and Palm Pilot. - http://www.dejobaan.com/
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. - http://www.denki.co.uk/
Dis Software - Finland based console and PC game developer. Offers project information and downloads. - http://personal.inet.fi/surf/imagine/
Digital Dialect - Video game development company which develops new game titles, translates existing games between platforms and licenses 3D game development tools. - http://www.digitald.com/
Dungeon Crawl Software - Developer of Green Thumb Computer. - http://www.dungeon-crawl.com/
Delta 4 Online - Developer of various older products. - http://www.delta4.icom43.net/
Deep Red Games Limited - Developer of Risk II and Monopoly Tycoon. - http://www.deepred.co.uk/