| IBM PC DOS pack. |  Knight Force Model 888 | 1991 | EDOS Electronic Distribution of Software |
| Atari ST pack. | Knight Force Model 888 | 1991 | EDOS Electronic Distribution of Software |
| Amstrad CPC pack. | Knight Games | 1991 | EDOS Electronic Distribution of Software |
| Sharp X68000 Series 5.25in. disk |  Knight Maker | 1991 | Yamamoto |
| Nintendo Game Boy Cart. | Knight Quest Model DMG-FWJ | 1991 | Taito Corp. Japan |
| Commodore Amiga 500 disk | Knightmare | 1991 | Mindscape, Inc. Northbrook, IL, USA 24294 |
| Atari ST disk | Knightmare | 1991 | Mindscape, Inc. Northbrook, IL, USA 24294 |
| Amstrad CPC pack. | Knightmare | 1991 | EDOS Electronic Distribution of Software |
| Arcade Video game | Knights of the Round B-Board 89625B-1 | 1991 | Capcom Co., Ltd. Japan |
| Arcade Video game | Knights of the Round B-Board 91634B-2 | 1991 | Capcom Co., Ltd. Japan |
| Arcade Video game |  Knights of the Round B-Board 91635B-2 | 1991 | Capcom Co., Ltd. Japan |
| Commodore Amiga 500 disk | Knights of the Sky | 1991 | MicroProse, Ltd. Bristol, UK 015352 |
| Atari ST disk | Knights of the Sky | 1991 | MicroProse, Ltd. Bristol, UK 015352 |
| Sharp X68000 Series 5.25in. disk | Ko-Window Application Shuu 1 | 1991 | Takeru Co. Ltd Japan |
| Sinclair ZX Spectrum cass. | Kobyashi Ag'Kwo | 1991 | Zenobi Soft. |
| Sinclair ZX Spectrum+3 disk | Kobyashi Ag'Kwo - A Return to Naru | 1991 | Zenobi Soft. |
| Nintendo Game Boy Cart. | Koi wa Kakehiki Model DMG-KIJ | 1991 | Pony Canyon, Inc. Japan |
| Amstrad CPC pack. | Kokotoni Wilf | 1991 | EDOS Electronic Distribution of Software |
| Nintendo Game Boy Cart. | Konamic Basket Model DMG-DWJ | 1991 | Konami Co., Ltd. Japan |
| Nintendo Game Boy Cart. | Konamic Golf Model DMG-KGA | 1991 | Konami Co., Ltd. Japan |
| MSX cass. | Kong's Revenge | 1991 | Zigurat Soft. Spain |
| Amstrad CPC cass. | Kong's Revenge | 1991 | Zigurat Soft. Spain |
| Amstrad CPC 464 disk | Kong's Revenge | 1991 | Zigurat Soft. Spain |
| Sinclair ZX Spectrum cass. | Kong's Revenge Model SE 1227 | 1991 | Zigurat Soft. Spain |
| IBM PC 3.5in. disk | Kono | 1991 | HVB Soft. |
| NEC PC-9801 Series 5.25in. disk | Kounai Shasei Vol. 1 - Yo ni mo H na Monogatari 18 | 1991 | Fairytale Japan |
| MSX 2 disk | Kounai Shasei Vol. 1 - Yo ni mo H na Monogatari | 1991 | Fairytale Japan |
| NEC PC-9801 Series 5.25in. disk | Kounai Shasei Vol. 2 - Bishoujo Kamen no Nazo - Bishoujo Kamen Kenzan! 18 | 1991 | Fairytale Japan |
| MSX 2 disk | Kounai Shasei Vol. 2 - Bishoujo Kamen no Nazo - Bishoujo Kamen Kenzan! | 1991 | Fairytale Japan |
| NEC PC-9801 Series 5.25in. disk | Kounai Shasei Vol. 3 - Sailor-fuku Senshi Akko-chan tai Bishoujo Kamen | 1991 | Fairytale Japan |
| MSX 2 disk | Kounai Shasei Vol. 3 - Sailor-fuku Senshi Akko-chan tai Bishoujo Kamen | 1991 | Fairytale Japan |
| Sinclair ZX Spectrum+3 disk | Krazy Kartoonist Kaper + The Grue-Knapped | 1991 | FSF Adventures |
| IBM PC/AT DOS pack. | KrisKros Sw | 1991 | Hirbernik, Robert M. |
| Sinclair ZX Spectrum cass. | Krtek a Auticko | 1991 | Proxima Soft. Czech Republic |
| IBM PC/AT DOS pack. | Krypto Sw | 1991 | Intelligent Educational Soft. |
| Sega Mega Drive cart. | Kuhga - Operation Code Vapor Trail Model T-49043 | 1991 | Telenet Japan |
| Nintendo NES cart. |  Kung Fu 2 | 1991 | Irem America Corp. Redmond, WA, USA |
| Watch game | Kung Fu Warrior Model 60-2243 | 1991 | Radio Shack Fort Worth, TX, USA |
| Handheld game | Kung Fu Model 60-2238 | 1991 | Tandy Corp. |
| Nintendo Game Boy Cart. | Kung-Fu Master Model DMG-SX-NOE | 1991 | Irem Corp. Japan |
