| Nintendo Game Boy Color cart. |  Kakutou Ryouri Densetsu Bistro Recipe - Kettou Bistgarm-Hen Model DMG-A2WJ-JPN | 1999 | Banpresto Japan |
| Nintendo Game Boy Color cart. | Kanji Boy Model DMG-AWKJ-JPN | 1999 | J-Wing |
| Nintendo Game Boy Color cart. | Kanzume Monsters Parfait Model DMG-AQPJ-JPN | 1999 | Starfish, Inc. Japan |
| Nintendo Game Boy Color cart. | Kaseki Sousei Reborn II - Monster Digger Model DMG-ARMJ-JPN | 1999 | Starfish, Inc. Japan |
| Nintendo Game Boy Color cart. | Katou Hifumi Kudan - Shougi Kyoushitsu Model DMG-AKHJ-JPN | 1999 | Culture Brain |
| Nintendo Game Boy Color cart. | Kawa no Nushi Tsuri 4 Model DMG-VUTJ-JPN | 1999 | Victor Interactive Soft., Inc. |
| Nintendo Game Boy Color cart. | Kawaii Pet Shop Monogatari Model DMG-AEIJ-JPN | 1999 | Taito Corp. Japan |
| Nintendo Game Boy Color cart. | Ken Griffey Jr.'s Slugfest Model CGB-AYAE-USA | 1999 | Nintendo of America, Inc. USA 45496 |
| Nintendo Game Boy Color cart. | Kettou Beast Wars - Beast Senshi Saikyou Ketteisen Model DMG-AB7J-JPN | 1999 | Takara Co., Ltd. Japan |
| Nintendo Game Boy Color cart. | Kidou Senkan Nadesico - Ruri Ruri Mahjong Model CGB-AQNJ-JPN | 1999 | King Records Co., Ltd. Japan |
| Nintendo Game Boy Color cart. | Kinniku Banzuke GB - Chousensha wa Kimida! Model DMG-A5KJ-JPN | 1999 | Konami Co., Ltd. Japan |
| Nintendo Game Boy Color cart. | Klax Model CGB-ALXE-USA | 1999 | Midway Home Ent. |
| Nintendo Game Boy Color cart. |  Klax Model CGB-ALXP-EUR | 1999 | Midway Home Ent. |
| Nintendo Game Boy Color cart. | Klustar Model DMG-AKUE-USA | 1999 | Infogrames Ent., Inc. CA, USA 20295 |
| Nintendo Game Boy Color cart. | Klustar Model DMG-AKUP-EUR | 1999 | Infogrames Europe 546430 |
| Nintendo Game Boy Color cart. | Knockout Kings Model CGB-AXKE-USA | 1999 | EA Sports |
| Nintendo Game Boy Color cart. | Knockout Kings Model CGB-AXKP-EUR | 1999 | EA Sports |
| Nintendo Game Boy Color cart. | Konchuu Hakase 2 Model DMG-A2KJ-JPN | 1999 | J-Wing |
| Nintendo Game Boy Color cart. | Koushien Pocket Model DMG-AKSJ-JPN | 1999 | Magical Co., Ltd. Japan |
| Nintendo Game Boy Color cart. | Legend of the River King GB Model DMG-ARKE-USA | 1999 | Natsume, Inc. Burlingame, CA, USA |
| Nintendo Game Boy Color cart. | Legend of the River King GB Model DMG-ARKP-EUR | 1999 | Victor Interactive Soft., Inc. |
| Nintendo Game Boy Color cart. | Les Razmoket - Voyage dans le Temps Model CGB-BRTF-FRA | 1999 | T-HQ, Inc. Toy HeadQuarters |
| Nintendo Game Boy Color cart. | Les Visiteurs Model DMG-AVGF-FRA | 1999 | UBI Soft Creteil, France 307211 |
| Nintendo Game Boy Color cart. | Little Magic Model CGB-ALJJ-JPN | 1999 | Altron Corp. |
| Nintendo Game Boy Color cart. | Logical Model CGB-AOGE-USA | 1999 | SUNSOFT Sun Corp. of America IL, USA |
| Nintendo Game Boy Color cart. | Logical Model CGB-AOGP-EUR | 1999 | SUNSOFT Kounan, Japan |
| Nintendo Game Boy Color cart. | Looney Tunes - Carrot Crazy Model DMG-ABLE-USA | 1999 | Infogrames Ent., Inc. CA, USA 20295 |
| Nintendo Game Boy Color cart. | Luca no Puzzle de Daibouken! Model DMG-ARCJ-JPN | 1999 | Human Ent. Japan |
| Nintendo Game Boy Color cart. | Lucky Luke Model CGB-ALQE-USA | 1999 | Infogrames Ent., Inc. CA, USA 20295 |
| Nintendo Game Boy Color cart. | Lucky Luke Model CGB-ALQP-EUR | 1999 | Infogrames Europe 546430 |
| Nintendo Game Boy Color cart. | Madden NFL 2000 Model DMG-AEME-USA | 1999 | T-HQ, Inc. Toy HeadQuarters |
| Nintendo Game Boy Color cart. | Madden NFL 2000 Model DMG-AEMP-EUR | 1999 | T-HQ, Inc. Toy HeadQuarters |
| Nintendo Game Boy Color cart. | Majokko Mari-chan no Kisekae Monogatari Model DMG-A23J-JPN-1 | 1999 | Pack In Soft. Japan |
| Nintendo Game Boy Color cart. | Majokko Mari-chan no Kisekae Monogatari Model DMG-A23J-JPN | 1999 | Pack In Soft. Japan |
| Nintendo Game Boy Color cart. | Marble Madness Model CGB-ANNE-USA | 1999 | Midway Home Ent. |
| Nintendo Game Boy Color cart. | Mario Golf GB Model CGB-AWXJ-JPN | 1999 | Nintendo Co., Ltd. Japan |
| Nintendo Game Boy Color cart. | Mario Golf Model CGB-AWXE-USA | 1999 | Nintendo of America, Inc. USA 45496 |
| Nintendo Game Boy Color cart. | Mario Golf Model CGB-AWXP-EUR | 1999 | Nintendo of Europe GmbH 45496 |
| Nintendo Game Boy Color cart. | Medarot 2 - Kabuto Version Model DMG-A2MJ-JPN | 1999 | Imagineer Co., Ltd. Japan |
| Nintendo Game Boy Color cart. | Medarot 2 - Kuwagata Version Model DMG-A2NJ-JPN | 1999 | Imagineer Co., Ltd. Japan |
