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- Cactus Game Design - Biblical Themed Board and Card Games
- Carnivore Games - Role-playing games
- Cartamundi - Playing Cards & Cards for Games
- Catalyst Game Labs - Wargames & Role-playing games
- Chaosium - Role-playing games
- Cheapass Games - Cheaply produced board games and card games
- Clash of Arms - Art of War Magazine and Miniatures Rules
- Classico - Educational classical music games
- Columbia Games - Historical and miniatures games, board games
- Conflict Games - Wargames
- Contested Ground Studios - Role-playing games
- Cool Studio - Card games
- Corone Design - Role-playing games
- Cosmic Wimpout - Dice games
- Courier Publishing Company, The - Courier Magazine and Miniature Rules
- Crafty Games - Role-playing games
- Crusader Publishing - Historical Miniatures and Miniature Rules
- Cracked Mirror Publishing - Role-playing games
- Cranium, Inc. - Board games and card games
- Creation Chaos Inc - Card games
- Creations Unlimited - Role-playing accessories
- Creative Wargames Workshop - Board Games and Miniature Games
- Crimson Empire Publishing - Role-playing games
- Crisloid - Board games
- Critical Hit - Board games
- Critical Mass Studios - Role-playing games
- Croftword - Fantasy Roleplaying Magazine
- Crown and Andrews - Board games, educational games, wooden puzzles, Rubiks puzzles, and jigsaw puzzles
- Crucible Design - Role-playing games
- Crunchy Frog Enterprises - Role-playing games and Miniatures
- Crystal Caste LLC - Dice
- CyberGecko - Board Games and card games
Read more about this topic: List Of Game Manufacturers