| Arcade Video game |  Iwatani Tenhoo no Mahjong Comic Gekijou Vol. 1 | 1991 | Dynax, Inc. Nagoya, Japan |
| NEC TurboGrafx-CD |  J.B. Harold Murder Club Model TGXCD1012 | 1991 | NEC Technologies, Inc. IL, USA |
| IBM PC/AT DOS pack. | Jacaranda Jim Ver. 2.30 Sw | 1991 | Cluley, Graham |
| IBM PC/AT DOS pack. |  Jacaranda Jim Ver. 3.0 Sw | 1991 | Cluley, Graham |
| Commodore Amiga 500 disk | Jack Nicklaus Presents The Great Courses of the U.S. Open | 1991 | Accolade, Inc. San Jose, CA, USA 15605 |
| Apple IIGS disk | Jack Nicklaus Presents The Great Courses of the U.S. Open | 1991 | Accolade, Inc. San Jose, CA, USA 15605 |
| IBM PC 5.25in. disk | Jack Nicklaus Presents The Great Courses of the U.S. Open Model 60114 | 1991 | Accolade, Inc. San Jose, CA, USA 15605 |
| IBM PC 3.5in. disk | Jack Nicklaus Presents The Great Courses of the U.S. Open Model 60115 | 1991 | Accolade, Inc. San Jose, CA, USA 15605 |
| Amstrad CPC type-in | Jack Pot 2K octets Hb | 1991 | DMV Daten und Medien Verlag Eschwege, Germany |
| NEC PC-Engine HuCARD | Jackie Chan Model HC90032 | 1991 | Hudson Soft. Hudson Group Japan |
| Nintendo NES cart. | Jackie Chan's Action Kung-Fu Model NES-V5-FRA | 1991 | Hudson Soft. Hudson Group Japan |
| Acorn Archimedes disk | Jahangir Khan Squash | 1991 | Krisalis Soft., Ltd. |
| Amstrad CPC cass. | Jahangir Khan World Championship Squash | 1991 | Krisalis Soft., Ltd. |
| Amstrad CPC 464 disk | Jahangir Khan World Championship Squash | 1991 | Krisalis Soft., Ltd. |
| Commodore Amiga 500 disk | Jahangir Khan's World Championship Squash | 1991 | Krisalis Soft., Ltd. |
| Sinclair ZX Spectrum cass. | Jahangir Khan's World Championship Squash | 1991 | Krisalis Soft., Ltd. |
| Sinclair ZX Spectrum+3 disk | Jahangir Khan's World Championship Squash | 1991 | Krisalis Soft., Ltd. |
| Atari ST disk | Jahangir Khan's World Championship Squash | 1991 | Krisalis Soft., Ltd. |
| Sinclair ZX Spectrum cass. | Jahangir Khan's World Championship Squash | 1991 | System 4 de Espana, S.A. Spain |
| Sinclair ZX Spectrum cass. | Jai Alai | 1991 | Opera Soft. Spain |
| MSX cass. | Jai Alai | 1991 | Opera Soft. Spain |
| Amstrad PCW soft. | Jai Alai | 1991 | Opera Soft. Spain |
| Amstrad CPC 464 disk | Jai-Alai | 1991 | Opera Soft. Spain |
| Nintendo Super Famicom cart. | Jaleco Rally Big Run - The Supreme 4WD Challenge Model SHVC-BR | 1991 | JALECO Co., Ltd. Japan |
| Sega Mega Drive cart. | James 'Buster' Douglas Knockout Boxing P | 1991 | Taito Corp. Japan |
| IBM PC 3.5in. disk | James Bond 007 | 1991 | HVB Soft. |
| Sega Genesis cart. | James Pond - Underwater Agent Model 7053 | 1991 | Electronic Arts CA, USA 14633 |
| Commodore Amiga 500 disk | James Pond II - Codename RoboCod | 1991 | Millennium Interactive, Ltd. |
| Commodore Amiga 500 disk | James Pond II - Codename RoboCod | 1991 | Kixx 013442 |
| Atari ST disk | James Pond II - Codename RoboCod | 1991 | Millennium Interactive, Ltd. |
| Sega Genesis cart. | James Pond II - Codename RoboCod Model 7092 | 1991 | Electronic Arts CA, USA 14633 |
| Sega Mega Drive cart. | James Pond II - Codename RoboCod Model E199SMXI | 1991 | Electronic Arts CA, USA 14633 |
| Sharp X68000 Series 5.25in. disk | Jane | 1991 | System House Oh! Japan |
| Redemption game (mechanical) | Janken Man Fever JP | 1991 | Sunwise Japan |
| Redemption game (mechanical) | Janken Man JP | 1991 | Sunwise Japan |
| Redemption game (mechanical) | Janken Man Kattara Ageru | 1991 | Sunwise Japan |
| Nintendo Game Boy Cart. | Jankenman Model DMG-JAJ | 1991 | NCS Corp. Nippon Computer Systems Japan |
| NEC PC-9801 Series 5.25in. disk | Janou Touryuumon | 1991 | Game Arts Co., Ltd. Japan |
| NEC PC-9801 Series 3.5in. disk | Janou Touryuumon | 1991 | Game Arts Co., Ltd. Japan |
| NEC PC-9801 Series 5.25in. disk | Janou Touryuumon II | 1991 | Game Arts Co., Ltd. Japan |
