| Sony PlayStation CD |  Konami Arcade Classics Model SLUS-00945 | 1999 | Konami of America CA, USA |
| Sony PlayStation CD |  Konami the Best: Beatmania Model SLPM-86390~1 | 1999 | Konami Co., Ltd. Japan |
| Sony PlayStation CD | Konami the Best: Gensou Suikoden II Model SLPM-86389 | 1999 | Konami Co., Ltd. Japan |
| Sony PlayStation CD | Konami the Best: Mitsumete Knight Model SLPM-86220 | 1999 | Konami Co., Ltd. Japan |
| Sony PlayStation CD | Konami the Best: Other Life - Azure Dreams Model SLPM-86104 | 1999 | Konami Co., Ltd. Japan |
| Sony PlayStation CD | Konami the Best: Paro Wars Model SLPM-86392 | 1999 | Konami Co., Ltd. Japan |
| Nintendo Game Boy Color cart. |  Konchuu Hakase 2 Model DMG-A2KJ-JPN | 1999 | J-Wing |
| Sony PlayStation CD | Koneko mo Issho Model SCPS-10127 | 1999 | Sony Computer Ent., Inc. SCEI Japan |
| Arcade Video game | Kongshiri | 1999 | Jung Won Korea |
| Arcade Video game | Koro Koro Quest | 1999 | Takumi Japan |
| Bandai WonderSwan cart. | Kosodate Quiz Dokodemo - My Angel Model SWJ-BAN007 | 1999 | Bandai Co., Ltd. Japan |
| Sony PlayStation CD | Kosodate Quiz Motto My Angel Model SLPS-01885 | 1999 | NAMCO, Ltd. Japan |
| Sony PlayStation CD | Kotobuki Grand Prix - Mezase! Genchari King Model SLPS-01941 | 1999 | Syscom Ent. Japan |
| Sony PlayStation CD |  Koudelka - Promotion-ban Model SLPM-80490 | 1999 | SNK Corp. Shin Nihon Kikaku Japan |
| Sony PlayStation CD | Koudelka Demo Model SLPM-80490 | 1999 | SNK Corp. Shin Nihon Kikaku Japan |
| Sony PlayStation CD | Koudelka Model SLPS-02460~3 | 1999 | SNK Corp. Shin Nihon Kikaku Japan |
| Sony PlayStation CD | Koukroseatro - Yuukyuu no Hitomi Model SLPS-02385 | 1999 | SUNSOFT Kounan, Japan |
| Nintendo Game Boy Color cart. | Koushien Pocket Model DMG-AKSJ-JPN | 1999 | Magical Co., Ltd. Japan |
| Sony PlayStation CD | Kouyasai - A Sherd of Youthful Memories Model SLPS-01775 | 1999 | Shoeisha Co., Ltd. Japan |
| PC/MS-Windows CD | Kowloon Tokyo | 1999 | Janis Computer Soft., Inc. Japan |
| Pachinko | Kujirakun | 1999 | Heiwa Japan |
| Sony PlayStation CD | KulaQuest Model SCPS-10064 | 1999 | Sony Computer Ent., Inc. SCEI Japan |
| Pachislot | Kung Foo Lady | 1999 | Yamasa Japan |
| Pachinko | Kunoichi Ninpouchou Dai Yamaki | 1999 | Takao Co., Ltd. Japan |
| Pachinko | Kunoichi Ninpouchou Daigokan | 1999 | Takao Co., Ltd. Japan |
| Pachinko | Kunoichi Ninpouchou Dainana Kan | 1999 | Takao Co., Ltd. Japan |
| Pachinko | Kunoichi Ninpouchou Daisankan | 1999 | Takao Co., Ltd. Japan |
| Pachinko | Kunoichi Ninpouchou Menkyokaiden | 1999 | Takao Co., Ltd. Japan |
| Sony PlayStation CD | Kunoichi Torimonochou Model SLPS-01773 | 1999 | GMF |
| Sony PlayStation CD | Kuroi Hitomi no noir - Cielgris Fantasm Model SLPS-01450 | 1999 | Gust Japan |
| Sony PlayStation CD | Kurushi Final - Das Ultimative Puzzle Model SCES-02011 | 1999 | Sony Computer Ent. Europe SCEE |
| Sony PlayStation CD | Kurushi Final - El Rompecabezas Elevado al Cubo Model SCES-02013 | 1999 | Sony Computer Ent. Europe SCEE |
| Sony PlayStation CD | Kurushi Final - Il Puzzle Game in 3D Model SCES-02012 | 1999 | Sony Computer Ent. Europe SCEE |
| Sony PlayStation CD | Kurushi Final - Mental Blocks Model SCES-02009 | 1999 | Sony Computer Ent. Europe SCEE |
| Sony PlayStation CD | Kurushi Final - Musclez votre Cerveau Model SCES-02010 | 1999 | Sony Computer Ent. Europe SCEE |
| Sony PlayStation CD | Kuubo Senki Model SLPS-01854 | 1999 | Unbalance Japan |
| Nintendo 64DD game | Kyojin no Doshin | 1999 | Nintendo Co., Ltd. Japan |
| Sony PlayStation CD | Kyoro-chan no Purikura Daisakusen Model SLPS-01692 | 1999 | Tomy |
| Sony PlayStation CD | Kyousouba Ikusei Simulation - Derby Stallion 99 Model SLPS-02299 | 1999 | ASCII Corp. Japan |
| Bandai WonderSwan cart. | Kyousouba Ikusei Simulation KEIBA Model SWHJ-BEC001 | 1999 | BEC Japan |
