| Nintendo Game Boy Cart. |  Jeopardy! Platinum Edition Model DMG-APJE-USA | 1996 | GameTek, Inc. Miami Beach, FL, USA 43948 |
| Nintendo Game Boy Cart. | Jeopardy! Sports Edition Model DMG-JE-USA | 1994 | GameTek, Inc. Miami Beach, FL, USA 43948 |
| Nintendo Game Boy Cart. | Jeopardy! Teen Tournament Model DMG-AJQE-USA | 1996 | GameTek, Inc. Miami Beach, FL, USA 43948 |
| Nintendo Game Boy Cart. | Jeopardy! Model DMG-JP-USA | 1991 | GameTek, Inc. Miami Beach, FL, USA 43948 |
| Nintendo Game Boy Cart. |  Jet Pak Jak | 1991 | Unknown |
| Nintendo Game Boy Cart. | Jet Pak Man | 1991 | Unknown |
| Nintendo Game Boy Cart. | Jetpack | 1991 | JALECO Co., Ltd. Japan |
| Nintendo Game Boy Cart. | Jikuu Senki Mu Model DMG-H1J | 1991 | Hudson Soft. Hudson Group Japan |
| Nintendo Game Boy Cart. |  Jimmy Connors Tennis Model DMG-JC-NOE | 1993 | UBI Soft Creteil, France 307211 |
| Nintendo Game Boy Cart. | Jimmy Connors Tennis Model DMG-JC-USA | 1993 | UBI Soft, Inc. Sausalito, CA, USA 08888 |
| Nintendo Game Boy Cart. | Jimmy Connors Tennis Model SMG-JCA | 1993 | Misawa Ent. Co., Ltd. Japan |
| Nintendo Game Boy Cart. | Jinsei Game Densetsu Model DMG-JGJ | 1991 | Takara Co., Ltd. Japan |
| Nintendo Game Boy Cart. | Jinsei Game Model DMG-AZGJ | 1995 | Takara Co., Ltd. Japan |
| Nintendo Game Boy Cart. | Joe & Mac - Caveman Ninja Model DMG-JM-UKV | 1993 | Data East Corp. Japan |
| Nintendo Game Boy Cart. | Joe & Mac Model DMG-JM-USA | 1993 | Data East Corp. Japan |
| Nintendo Game Boy Cart. | John Madden Football | 1993 | UBI Soft Creteil, France 307211 |
| Nintendo Game Boy Cart. | Jordan vs Bird - One on One Model DMG-JB-ESB | 1992 | Electronic Arts CA, USA 14633 |
| Nintendo Game Boy Cart. | Jordan vs Bird - One on One Model DMG-JB-UKV | 1992 | Electronic Arts CA, USA 14633 |
| Nintendo Game Boy Cart. | Jordan vs Bird - One on One Model DMG-JB-USA | 1992 | Electronic Arts CA, USA 14633 |
| Nintendo Game Boy Cart. | Jordan vs Bird - One on One Model DMG-JBA | 1993 | Electronic Arts Victor, Inc. Japan |
| Nintendo Game Boy Cart. | Joshua & the Battle of Jericho | 1992 | Wisdom Tree, Inc. CA, USA |
| Nintendo Game Boy Cart. | Judge Dredd Model DMG-AJDE-USA | 1995 | Acclaim Ent., Inc. Glen Cove, NY, USA |
| Nintendo Game Boy Cart. | Judge Dredd Model DMG-AJDJ-JPN | 1995 | Acclaim Japan |
| Nintendo Game Boy Cart. | Judge Dredd Model DMG-AJDP-EUR | 1995 | Acclaim Ent., Inc. Glen Cove, NY, USA |
| Nintendo Game Boy Cart. | Jungle no Ouja Tar-chan Model DMG-J3J | 1994 | Bandai Co., Ltd. Japan |
| Nintendo Game Boy Cart. | Jungle Strike Model DMG-AJGE-UKV | 1995 | Ocean Soft., Ltd. 13156 |
| Nintendo Game Boy Cart. | Jungle Strike Model DMG-AJGE-USA | 1995 | Ocean of America, Inc. San Jose, CA, USA |
| Nintendo Game Boy Cart. | Jungle Wars Model DMG-JWJ | 1991 | Pony Canyon, Inc. Japan |
| Nintendo Game Boy Cart. | Jurassic Park Part 2 - The Chaos Continues Model DMG-A2JE-USA | 1994 | Ocean of America, Inc. San Jose, CA, USA |
| Nintendo Game Boy Cart. | Jurassic Park Part 2 - The Chaos Continues Model DMG-A2JP-EUR | 1994 | Ocean Soft., Ltd. 13156 |
| Nintendo Game Boy Cart. | Jurassic Park Model DMG-JQ-FAH | 1993 | Ocean Soft., Ltd. 13156 |
| Nintendo Game Boy Cart. | Jurassic Park Model DMG-JQ-NOE | 1993 | Ocean Soft., Ltd. 13156 |
| Nintendo Game Boy Cart. | Jurassic Park Model DMG-JQ-UKV | 1993 | Ocean Soft., Ltd. 13156 |
| Nintendo Game Boy Cart. | Jurassic Park Model DMG-JQ-USA | 1993 | Ocean of America, Inc. San Jose, CA, USA |
| Nintendo Game Boy Cart. | Kachiuma Yosou Keiba Kizoku EX '94 Model DMG-QEJ | 1994 | King Records Co., Ltd. Japan |
| Nintendo Game Boy Cart. | Kachiuma Yosou Keiba Kizoku EX '95 Model DMG-AQEJ-JPN | 1995 | King Records Co., Ltd. Japan |
| Nintendo Game Boy Cart. | Kachiuma Yosou Keiba Kizoku Model DMG-K6J | 1993 | King Records Co., Ltd. Japan |
| Nintendo Game Boy Cart. | Kaeru no Tame ni Kane wa Naru Model DMG-OKJ | 1992 | Nintendo Co., Ltd. Japan |
| Nintendo Game Boy Cart. | Kaijuu Ou Godzilla Model DMG-G7J | 1993 | Bandai Co., Ltd. Japan |
| Nintendo Game Boy Cart. | Kaisen Game - Navy Blue 90 Model DMG-N9J | 1990 | Use Corp. Japan |
