| Fujitsu FM-7 cass. |  Crisis Mountain Model CFT-06 | 1984 | Comptiq Japan |
| NEC PC-8801 Series disk | Crisis Mountain Model CND-07 | 1984 | Comptiq Japan |
| Commodore C64 disk | Critical Mass | 1984 | Sirius Soft., Inc. Sacramento, CA, USA |
| Commodore VIC-20 type-in | Critical Mass | 1984 | Paradox Group |
| Alice 32 cass. | Crocky | 1984 | Loriciels France |
| Thomson MO5 cass. | Crocky II | 1984 | Loriciels France |
| Casio FX702p type-in | Croisade | 1984 | Shift Editions Paris, France |
| Commodore VIC-20 type-in | Cross Fire | 1984 | IPC Magazines, Ltd. |
| IBM PC 5.25in. disk | Crossfire | 1984 | Sierra On-Line, Inc. USA 20626 |
| Applied Technology Microbee disk | Crossword Capers | 1984 | Goodison Soft. |
| Commodore VIC-20 type-in | Croussaider | 1984 | Markt & Technik |
| Commodore C64 type-in | Crown | 1984 | Data Becker GmbH Germany |
| Commodore VIC-20 type-in | Crown & Anchor | 1984 | Argus Specialist Publications |
| Acorn Electron cass. | Crown Jewels | 1984 | Alligata Soft. |
| Arcade Video game | Crowns Golf | 1984 | Nasco Japan |
| Apple II 5.25 disk | Crowther and Woods Adventure | 1984 | Sweet Micro Systems, Inc. |
| Spectravideo SV-318 cass. | Crunch Model SD-349T | 1984 | SVI SpectraVideo, Inc. |
| Commodore C64 type-in | Crusade | 1984 | Compute! Publications, Inc. |
| Sinclair ZX Spectrum cass. | Cruse On | 1984 | Mushroomsoft |
| NEC PC-8001mkII type-in | Crush Boy Game | 1984 | Dempa Shinbunsha Japan |
| NEC PC-6001 type-in | Crush Circus | 1984 | Dempa Shinbunsha Japan |
| Commodore C64 cass. | Crush, Crumble and Chomp! Model 437C | 1984 | Epyx, Inc. Redwood City, CA, USA |
| Acorn BBC/Electron cass. | Crypt Capers | 1984 | Software Projects, Ltd. |
| Apple II 5.25 disk | Crypto Cube 1984 | 1984 | DesignWare |
| TRS-80 type-in | Cryptographie | 1984 | Shift Editions Paris, France |
| Atari 400/800 cass. | Crystal Castles | 1984 | Atari, Inc. CA, USA |
| Atari 400/800 disk | Crystal Castles | 1984 | Atari, Inc. CA, USA |
| Atari 2600 cart. |  Crystal Castles Model CX26110P | 1984 | Atari, Inc. CA, USA |
| Atari 2600 cart. | Crystal Castles Model CX26110 P | 1984 | Atari, Inc. CA, USA |
| Atari 400/800 cart. |  Crystal Castles Model RX8055 | 1984 | Atari, Inc. CA, USA |
| Commodore C64 cart. | Crystal Castles Model RX8557 | 1984 | Atarisoft Atari, Inc. |
| Sinclair ZX Spectrum cass. | Crystal Quest | 1984 | Burnard, Keith |
| Amstrad CPC cass. | Crystal Theft | 1984 | Wicca Soft. |
| Amstrad CPC 464 disk | Crystal Theft | 1984 | Wicca Soft. |
| Dragon cass. | Cu*Ber | 1984 | Tom Mix Soft. |
| Sinclair ZX Spectrum cass. | Cube | 1984 | CCS Cases Computer Simulations, Ltd. London, England |
| Commodore C64 type-in | Cube of Eleusis | 1984 | Interface Publications |
| Tabletop game | Cube Zone | 1984 | Bandai Co., Ltd. Japan |
| Sinclair ZX Spectrum cass. | Cubey | 1984 | Chad Soft. |
| Sharp MZ-80K type-in | Cubic Maze | 1984 | Shogakukan Production |
