- Barracuda, Inc. - The company's publishing division, Hammerhead Entertainment, publishes adventure games and lifestyle titles for the Windows and Macintosh personal computer platforms.
- Battleaxe Studios - British PC games developer responsible for the Survival' series.
- Battlefront.com - Makers of Combat Mission.
- Bavisoft Software - Develops software for the blind and visually impaired. Offers FAQ, product information, and technical support.
- Bifrost Productions - Offers game programming and web design.
- Big Blue Box Studios - UK-based Developer of games such as Fable.
- BigWorld Technology - Australian computer games developer. Includes 3D client, advanced load-balancing server and world building tools.
- Bit Managers - Official site of Game Boy Advance developers. Company and game information.
- Black Dragon Productions - Producer of adult computer games including Riana Rouge.
- Black Tooth Games - Developer and publisher of sports simulations.
- Blade Interactive Studios - Manchester based computer games developer specializing in games for next generation consoles and PCs.
- Blissware Entertainment - A German game development company.
- Bloodlust Software - Makers of humorous old-style DOS games.
- Blue Planet Software - Computer and video game developer. Sole agent of the Tetris brand.
- Broadsword Interactive - Developer of Spirit of Speed.
- Broadsword Interactive Ltd - Designs and produces computer software for the Computer and console games industry, screen savers, web design and 3d modelled illustrations for the advertising sector.
- Buka Entertainment - Russian publisher of games such as Battle Mages and Horde: The Citadel.
- Bulldog Interactive - Developer of CueClub.
- BURNS - Developers of Game Of Death and Happy Doomsday.
- By Thunder - Developer of COBOL's Revenge. Site offers demo download and information on previous projects.
- The Bitmap Brothers - Game developer of titles such as Z: Steel Soldiers, Speedball Arena, Speedball 2100, Cadaver, Chaos Engine, Chaos Engine 2, Gods, Magic Pockets, Xenon, Xenon 2: Megablast, and Xenon 2000: Project PCF.