| K.O. - The Pro Boxing | JP | 2000-08 |
Altron | Commercial |
| Kaept'n Blaubaer - Die verrueckte Schatzsuche | DE | 2001-01 |
Ravensburger Interactive Media | Commercial |
| Kaitei Densetsu!! Treasure World | JP | 2000-08 |
Dazz | Commercial |
| Kakurenbo Battle - Monster Tactics | JP | 2000-11 |
Nintendo | Commercial |
| Kakutou Ryouri Densetsu Bistro Recipe - Gekitou Foodon Battle Hen | JP | 1999-10 |
Banpresto | Commercial |
| Kakutou Ryouri Densetsu Bistro Recipe - Kettou Bistgarm Hen | JP | 1999-12 |
Banpresto | Commercial |
| Kanji Boy | JP | 1999-06 |
J-Wing | Commercial |
| Kanji Boy 2 | JP | 2000-06 |
J-Wing | Commercial |
| Kanji Boy 3 | JP | 2003-06 |
J-Wing | Commercial |
| Kanji Boy 3 | JP | 2003-06-05 |
J-Wing | Prototype |
| Kanji Shishuu | JP | |
| Prototype |
| Kanji de Puzzle | JP | 2000-04 |
MTO | Commercial |
| Kanzume Monsters Parfait | JP | 1999-06 |
Starfish | Commercial |
| Karamuchou wa Oosawagi! - Okawari! | JP | 2000-08 |
Starfish | Commercial |
| Karamuchou wa Oosawagi! - Polinkies to Okashina Nakama-tachi | JP | 1998-12 |
Starfish | Commercial |
| Karate Joe | EU | 2001-03 |
Rocket Games | Unlicensed |
| Kaseki Sousei Reborn II - Monster Digger | JP | 1999-02 |
Starfish | Commercial |
| Katakis 3D | EU | 2001 |
Similis Software | Prototype |
| Katou Hifumi Kudan - Shougi Kyoushitsu | JP | 1999-04 |
Culture Brain | Commercial |
| Kawa no Nushi Tsuri 4 | JP | 1999-07-16 |
Natsume | Prototype |
| Kawa no Nushi Tsuri 4 | JP | 2001-04 |
Natsume | Commercial |
| Kawaii Pet Shop Monogatari | JP | 1999-09 |
Taito | Commercial |
| Kawaii Pet Shop Monogatari 2 | JP | 2000-12 |
Taito | Commercial |
| Keep the Balance | EU | 2001-11 |
JoWood Produtions | Commercial |
| Keibajou e Ikou! Wide | JP | 2000-04 |
HectorSoft | Commercial |
| Keitai Denjuu Telefang - Power Version | JP | 2000-11 |
Natsume | Commercial |
| Keitai Denjuu Telefang - Speed Version | JP | 2000-11 |
Smilesoft | Commercial |
| Kelly Club | US | 2001-10 |
Vivendi Universal Games | Commercial |
| Ken Griffey Jr.'s Slugfest | US | 1999-06 |
Nintendo | Commercial |
| Kettou Transformers Beast Wars - Beast Senshi Saikyou Ketteisen | JP | 1999-03 |
Takara | Commercial |
| Kidou Senkan Nadesico - Ruri Ruri Mahjong | JP | 1999-12 |
King Records | Commercial |
| Kikansha Thomas - Sodor-tou no Nakama-tachi | JP | 2001-10 |
Tam | Commercial |
| Kikstart | WORLD | |
| Unlicensed |
| Kindaichi Shounen no Jikenbo - 10 Nenme no Shoutaijou | JP | 2000-12 |
Banpresto | Commercial |
| King of Fighters R2 | TW | |
| Unlicensed |
| Kinniku Banzuke GB - Chousensha wa Kimida! | JP | 1999-11 |
Konami | Commercial |
| Kinniku Banzuke GB 2 - Mezase! Muscle Champion | JP | 2000-08 |
Konami | Commercial |
| Kinniku Banzuke GB 3 - Shinseiki Survival Retsuden! | JP | 2001-02 |
Konami | Commercial |
| Kirby - Tilt 'n' Tumble | US | 2001-04 |
Nintendo | Commercial |
| Kirikou | EU | 2001-11 |
Wanadoo Edition | Commercial |
| Kisekae Series 2 - Oshare Nikki | JP | 2001-03 |
Victor | Commercial |
| Kisekae Series 3 - Kisekae Hamster | JP | 2001-12 |
Victor | Commercial |
| Klax | EU | 1999-04 |
Midway | Commercial |
| Klax | US | 1999-04 |
Midway | Commercial |
| Klustar | EU | 1999-07 |
Infogrames | Prototype |
| Klustar | EU | 1999-07 |
Infogrames | Commercial |
| Klustar | JP | 1999-07 |
Infogrames | Prototype |
| Klustar | US | 1999-07 |
Infogrames | Commercial |
| Knit-Wit | WORLD | |
| Unlicensed |
| KnockOut | WORLD | |
| Unlicensed |
| Knockout Kings | EU | 1999-12 |
Electronic Arts | Commercial |
| Knockout Kings | US | 1999-12 |
Electronic Arts | Commercial |
| Koguru Guruguru - Guruguru to Nakayoshi | JP | 2001-07 |
Sting Entertainment | Commercial |
| Konami GB Collection Vol.1 | EU | 2000-02 |
Konami | Commercial |
| Konami GB Collection Vol.2 | EU | 2000-02 |
Konami | Commercial |
| Konami GB Collection Vol.3 | EU | 2000-05 |
Konami | Commercial |
| Konami GB Collection Vol.4 | EU | 2000-05 |
Konami | Commercial |
| Konami Winter Games | EU | 2000-04 |
Konami | Commercial |
| Konchuu Fighters | JP | 2002-07 |
Digital Kids | Commercial |
| Konchuu Hakase 2 | JP | 1999-07 |
J-Wing | Commercial |
| Konchuu Hakase 3 | JP | 2001-07 |
J-Wing | Commercial |
| Konchuu Hakase 3 | JP | 2001-07-27 |
J-Wing | Prototype |
| Korokoro Kirby | JP | 2000-08 |
Nintendo | Commercial |
| Koto Battle - Tengai no Moribito | JP | 2001-03 |
Alphastar | Commercial |
| Koudai Guaishou - Da Jihe | TW | |
| Unlicensed |
| Koudai Guaishou - Dongzuo Pian | TW | |
| Unlicensed |
| Koudai Guaishou - Feicui Ban | TW | |
| Unlicensed |
| Koudai Guaishou - Sheng Bianshi | CN | |
| Unlicensed |
| Koudai Yaoguai - Baijin Ban | TW | 2005 |
Sintax | Unlicensed |
| Koudai Yaoguai Lu Baoshi | TW | |
| Unlicensed |
| Koushien Pocket | JP | 1999-03 |
Magical Company | Commercial |