Cabochon
California Pacific Computer
Callisto Corporation
Camel 101
CanalRun
Capcom
Casady & Greene
Cascade Computerware
Cascade Games Ltd
Casual Games Arcade
Cat Daddy Games
Cateia Games
Cauldron
Cavalier Computer
CDV Software
Cedar Software
Centauri Production
Centauri Productions
Certain Affinity
Chafitz
Changeling Software
Cheeky Monkey Software
Chris Sawyer
Chromatic Software
Chronic Logic
Cinemaware
City Interactive
Clever's Games
Climax
Clockwork Games
Cloud 9 Interactive
Codemasters
Codeminion
Codeproject
Coffee Stain Studios
Color Software
Colorquest
Commodore Business Machines
Comp-U-Gamer Software
Compuserve
Computer Heroes
Computer Knowledge
Computer Magic
Computer Price Index
Computer Programs Unlimited
Computer Shack
Computerland
Computerware
Compu-things
Conflict Recreations
Conroy & Conroy Company
Console Classix
Conspiracy
Coolsoft
COR Entertainment
Core Design
Cortland Data Systems
COSMI
Covert BitOps
Crave Entertainment
Creat Studio
Creative Assembly
Creative Asylum
Creative Multimedia
Creative Software
Creative Technical Consultants
Creative Wonders
Crocodile
Cromemco
Crossdown
CroTeam
Cryptic Studios
Crystal Dynamics
Crystal New Media
CrystalVision
Crystalware
Crytek
Cyan
CyberConnect 2
Cyberfront
Cyberlore Studios
Cygnus Studios
Cyna Games
Cypris Software
Note: bolded names indicate companies that released a game within the last twelve months.