| Pinball |  Car Hop Model 725 | 1991 | Premier Technology Co. Bensenville, IL, USA |
| NEC PC-9801 Series 5.25in. disk | Caramel Quest - Meitenkyuu no Megamizou | 1991 | Agumix Japan |
| Commodore Amiga 500 disk | Carcharodon - White Sharks | 1991 | Demonware |
| Sharp X68000 Series 5.25in. disk | Card Pro-68K | 1991 | Sharp Japan |
| Commodore Amiga 500 disk | Cardiaxx | 1991 | Electronic Zoo |
| Coin-op Misc. game | Carnival VI - Waniwani Panic | 1991 | NAMCO, Ltd. Japan |
| Sharp X68000 Series 5.25in. disk | Caroll | 1991 | System House Oh! Japan |
| Commodore Amiga 500 disk |  Carrier Command Model AT2D-CC07 | 1991 | Mirror Image Soft. |
| IBM PC 3.5in. disk | Carrier Command Model IB2D-CC07 | 1991 | Mirror Image Soft. |
| Sinclair ZX Spectrum cass. | Cartoon Character Collection | 1991 | Hi-Tec Soft. |
| Commodore Amiga 500 disk | CarVup | 1991 | Core Design, Ltd. |
| Medal video game | Casino Venus | 1991 | Taito Corp. Japan |
| Commodore C64 type-in | Castalia | 1991 | Compute! Publications, Inc. |
| Nintendo Game Boy Cart. |  Castelian Model DMG-CJ-ESP | 1991 | Storm Soft. |
| Nintendo Game Boy Cart. | Castelian Model DMG-CJ-NOE | 1991 | Storm Soft. |
| Nintendo Game Boy Cart. | Castelian Model DMG-CJ-USA | 1991 | Triffix Ent., Inc. |
| Nintendo NES cart. | Castelian Model NES-4C-USA | 1991 | Triffix Ent., Inc. |
| MGT SAM Coupé disk | Castle | 1991 | Hawkins, John |
| MSX 2 disk | Castle Adventure | 1991 | Drack Soft |
| Acorn Archimedes disk | Castle Black Heart Hb | 1991 | Unknown |
| Slot Machine | Castle Front Regal model | 1991 | Royal Bell, Ltd. |
| IBM PC 5.25in. disk | Castle of Dr. Brain | 1991 | Sierra On-Line, Inc. USA 20626 |
| IBM PC 3.5in. disk | Castle of Dr. Brain Model 75100 | 1991 | Sierra On-Line, Inc. USA 20626 |
| IBM PC 3.5in. disk | Castle of Dr. Brain Model 85100 | 1991 | Sierra On-Line, Inc. USA 20626 |
| Sega Master System cart. | Castle of Illusion Estrelando Mickey Mouse Model 026010 | 1991 | Tec Toy Industria de Brinquedos S.A. Brazil |
| Sega Mega Drive cart. | Castle of Illusion Estrelando Mickey Mouse Model 043060 | 1991 | Tec Toy Industria de Brinquedos S.A. Brazil |
| Sega Game Gear cart. | Castle of Illusion Starring Mickey Mouse Model 2401 | 1991 | SEGA Enterprises, Ltd. Tokyo, Japan |
| IBM PC/AT DOS pack. | Castle Siege Sw | 1991 | Sherwood, Tom |
| Sinclair ZX Spectrum cass. | Castle Warlock | 1991 | Adventure Probe Soft. |
| Atari ST disk | Castles | 1991 | Interplay |
| IBM PC 5.25+3.5in. disk | Castles | 1991 | Interplay |
| IBM PC 5.25+3.5in. disk | Castles - The Northern Campaign | 1991 | Interplay |
| Nintendo Game Boy Cart. | Castlevania II - Belmont's Revenge Model DMG-CW-NOE | 1991 | Konami Co., Ltd. Japan |
| Nintendo Game Boy Cart. | Castlevania II - Belmont's Revenge Model DMG-CW-USA | 1991 | Konami, Inc. USA |
| Acorn Archimedes disk | Cataclysm | 1991 | Fourth Dimension, The |
| IBM PC/AT DOS 3.5in. disk | Catacomb 3-D Model 00129 | 1991 | Gamer's Edge |
| Amstrad CPC pack. | Cauldron I & II Model 734 | 1991 | EDOS Electronic Distribution of Software |
| Sharp X68000 Series 5.25in. disk | Cave Crowds | 1991 | Brings Onion Soft. |
| Elektronika BK0010 cass. | Cave Man | 1991 | VZK Corp. |
| Elektronika BK0010 cass. | Cave Rescuer | 1991 | PA Corp. |
