| Kabuki - Quantum Fighter (Europe) | |
| Kabuki - Quantum Fighter (USA) | |
| Kabushiki Doujou (Japan) | |
| Kaettekita! Gunjin Shougi - Nanya Sore! (Japan) | |
| Kage (Japan) | |
| Kage no Densetsu (Japan) | |
| Kagerou Densetsu (Japan) | |
| Kaguya Hime Densetsu (Japan) | |
| Kaijuu Monogatari (Japan) | |
| Kaijuu Monogatari (Japan) [En by KingMike v1.0Beta2] (~Shell Monsters Story) | |
| Kaiketsu Yanchamaru (Japan) | |
| Kaiketsu Yanchamaru 2 - Karakuri Land (Japan) | |
| Kaiketsu Yanchamaru 2 - Karakuri Land (Japan) [En by D v1.2] (~Kid Niki 2 - Karakuri Land) | |
| Kaiketsu Yanchamaru 3 - Taiketsu! Zouringen (Japan) | |
| Kaiketsu Yanchamaru 3 - Taiketsu! Zouringen (Japan) [En by Suicidal v1.0] (~Kid Niki 3) | |
| Kaizo Vania | |
| Kakefu Kun no Jump Tengoku - Speed Jigoku (Japan) | |
| Kame no Ongaeshi - Urashima Densetsu (Japan) | |
| Kamen no Ninja - Akakage (Japan) | |
| Kamen no Ninja - Hanamaru (Japan) | |
| Kamen Rider Club (Japan) | |
| Kamen Rider SD - Granshocker no Yabou (Japan) | |
| Kanshakudama Nage Kantarou no Toukaidou Gojuusan Tsugi (Japan) | |
| Kanshakudama Nage Kantarou no Toukaidou Gojuusan Tsugi (Japan) [En by KingMike v1.0] (~Kantaro the Pyro's Journey Across the Toukaido) | |
| Karakuri Kengou Den - Musashi Road - Karakuri Nin Hashiru! (Japan) | |
| Karaoke Studio (Japan) | |
| Karaoke Studio Senyou Cassette Vol. 1 (Japan) | |
| Karaoke Studio Senyou Cassette Vol. 2 (Japan) | |
| Karate Champ (USA) | |
| Karate Champ (USA) (Rev A) | |
| Karate Kid, The (USA) | |
| Karateka (Japan) | |
| Karateka (Japan) (Beta) | |
| Karnov (Japan) | |
| Karnov (Japan) [En by Vice v1.1] | |
| Karnov (USA) | |
| Kart Fighter | |
| (Unl) | |
| Kart Fighter Improvement | |
| Kawa no Nushi Tsuri (Japan) | |
| Keiba Simulation - Honmei (Japan) | |
| Kekkyoku Nankyoku Daibouken (Japan) | |
| Kekkyoku Nankyoku Daibouken (Japan) [En by DvD v1.0] (~Antarctic Adventure) | |
| Kero Kero Keroppi no Daibouken (Japan) | |
| Kero Kero Keroppi no Daibouken (Japan) [En by Gaijin v1.0] (~Kero Kero Keroppi's Big Adventure) | |
| Kero Kero Keroppi no Daibouken 2 - Donuts Ike ha Oosawagi! (Japan) | |
| Kero Kero Keroppi no Daibouken 2 - Donuts Ike ha Oosawagi! (Japan) [En by Spoony Bard v1.0] (~Kero Kero Keroppi's Great Big Adventure 2) | |
| Keroppi to Keroriinu no Splash Bomb! (Japan) | |
| Keroppi to Keroriinu no Splash Bomb! (Japan) [En by Suicidal v1.0] (~Keroppi & Keroleen's Splash Bomb) | |
| Kick Master (USA) | |
| Kick Off (Europe) | |