| Sinclair ZX Spectrum cass. |  Chase H.Q. II - Special Criminal Investigation | 1990 | Erbe Soft. Spain |
| Sinclair ZX Spectrum cass. |  Chase H.Q. II - Special Criminal Investigation Model 015502 | 1990 | Ocean Soft., Ltd. 13156 |
| Nintendo Game Boy Cart. | Chase H.Q. Model DMG-HQ-AUS | 1990 | Taito Corp. Japan |
| Nintendo Game Boy Cart. | Chase H.Q. Model DMG-HQ-ESP | 1990 | Taito Corp. Japan |
| Nintendo Game Boy Cart. | Chase H.Q. Model DMG-HQ-NOE | 1990 | Taito Corp. Japan |
| Nintendo Game Boy Cart. | Chase H.Q. Model DMG-HQ-USA | 1990 | Taito America Corp. Elk Grove Village, IL, USA |
| Amstrad CPC cass. | Cheat Mode II The Revenge! | 1990 | Future Publishing, Ltd. UK |
| Amstrad CPC type-in | Cheat Mode II The Revenge! | 1990 | Future Publishing, Ltd. UK |
| Amstrad CPC type-in | Chess II | 1990 | Editions Mondiales France |
| IBM PC/AT DOS 3.5in. disk | Chess Player 2150 | 1990 | Oxford Softworks |
| Commodore Amiga 500 disk | Chess Simulator | 1990 | Infogrames Interactive, Inc. 329720 |
| Atari ST disk | Chess Simulator | 1990 | Infogrames Interactive, Inc. 329720 |
| IBM PC 5.25in. disk | Chess Simulator | 1990 | Infogrames Interactive, Inc. 329720 |
| Commodore Amiga 500 disk | Chessmaster 2100 | 1990 | Software Toolworks, The |
| Chess board | Chesster - Chess Challenger Model 6120 | 1990 | Fidelity Electronics |
| NEC TurboGrafx-16 cart. | Chew-Man-Fu Model TGX020035 | 1990 | NEC Home Electronics, Ltd. |
| Handheld game | Chibi Maruko-chan | 1990 | Varie Corp. Japan |
| Nintendo Game Boy Cart. | Chibi Maruko-chan - Okozukai Daisakusen! Model DMG-CMJ | 1990 | Takara Co., Ltd. Japan |
| Amstrad CPC type-in | Chicago | 1990 | Editions SORACOM France |
| Olivetti PC-128 cass. | Chicago 90 | 1990 | Olivetti Prodest Milan, Italy |
| IBM PC 5.25in. disk | Chicago 90 | 1990 | Microïds |
| Commodore C64 disk | Chief Executrivia | 1990 | J&F Publishing, Inc. |
| Arcade Video game | Chiki Chiki Boys B-Board 89625B-1 | 1990 | Capcom Co., Ltd. Japan |
| NEC PC-Engine HuCARD | Chikudenya Toubei - Kubikiri Yakata Yori Model NX89004 | 1990 | Naxat Soft. Japan |
| NEC PC-8801 Series disk | Chikyuu Bouei-gun Arbeit Butai | 1990 | Unknown Japan |
| MSX type-in | Childish Dragon Adventure | 1990 | Dempa Shinbunsha Japan |
| Nintendo NES cart. | Chiller | 1990 | AGCI American Game Cartridges, Inc. USA |
| IBM PC 5.25in. disk | Chip 'N Dale Rescue Rangers - The Adventure in Nimnul's Castle | 1990 | Hi-Tech Expressions, Inc. |
| Nintendo Famicom cart. | Chip to Dale no Daisakusen Model CAP-JD | 1990 | Capcom Co., Ltd. Japan |
| Commodore Amiga 500 disk | Chip's Challenge | 1990 | US Gold, Ltd. Birmingham, England 13442 |
| Commodore Amiga 500 disk | Chip's Challenge | 1990 | Epyx, Inc. Redwood City, CA, USA |
| Sinclair ZX Spectrum cass. | Chip's Challenge P | 1990 | US Gold, Ltd. Birmingham, England 13442 |
| Amstrad CPC cass. | Chip's Challenge | 1990 | US Gold, Ltd. Birmingham, England 13442 |
| Amstrad CPC 464 disk | Chip's Challenge | 1990 | Erbe Soft. Spain |
| Atari ST disk | Chip's Challenge | 1990 | US Gold, Ltd. Birmingham, England 13442 |
| Commodore C64 cass. | Chip's Challenge | 1990 | US Gold, Ltd. Birmingham, England 13442 |
| Amstrad CPC 464 disk | Chip's Challenge Model 548646 | 1990 | US Gold, Ltd. Birmingham, England 13442 |
| Atari ST disk | Chips Challenge | 1990 | Epyx, Inc. Redwood City, CA, USA |
| NEC PC-8001mkIISR type-in | Chisana Mahoutsukai | 1990 | Dempa Shinbunsha Japan |
| Nintendo Famicom cart. | Chiyonofuji no Ooichou Model FAC-EJ | 1990 | Face Co., Ltd. Tokyo, Japan |
