| KISS Psycho Circus - The Nightmare Child | EU | 2001-01-19 |
Take-Two Interactive | Commercial |
| KISS Psycho Circus - The Nightmare Child | US | 2000-10-29 |
Gathering of Developers | Commercial |
| Kaen Seibo - The Virgin on Megiddo | JP | 2001-08-02 |
Kobi | Commercial |
| Kaitou Apricot | JP | 2003-03-06 |
Takuyo | Commercial |
| Kanon | JP | 2000-09-14 |
NEC Interchannel | Commercial |
| Kao the Kangaroo | EU | 2000-12-08 |
Titus | Commercial |
| Kao the Kangaroo | EU | 2000-12-08 |
Titus | Demo |
| Kao the Kangaroo | US | 2001-02-13 |
Titus | Commercial |
| Karat DC-you - Pro Action Replay | JP | |
| Unlicensed |
| Karat DC-you - Pro Action Replay 2 | JP | |
| Unlicensed |
| Karat DC-you - Pro Action Replay DC PAR - Sampler - Nyuumon-hen | JP | |
| Unlicensed |
| Karous | JP | 2007-03-08 |
Milestone | Commercial |
| Kaze no Uta | JP | 2004-04-15 |
Rain | Commercial |
| Kidou Senkan Nadesico - Nadesico the Mission | JP | 1999-08-26 |
Kadokawa Shoten | Commercial |
| Kidou Senkan Nadesico - Nadesico the Mission - Special Disc | JP | |
| Demo |
| Kidou Senshi Gundam - Gihren no Yabou - Zeon no Keifu | JP | 2000-06-29 |
Bandai | Commercial |
| Kidou Senshi Gundam - Renpou vs. Zeon & DX | JP | 2002-04-11 |
Bandai | Commercial |
| Kimi ga Nozomu Eien | JP | 2002-09-26 |
Alchemist | Commercial |
| Kindan no Pet - Seaman - Gasse Hakase no Jikken-tou | JP | 1999-07-29 |
VIVARIUM | Commercial |
| Kita e. Photo Memories | JP | 1999-08-05 |
Hudson Soft | Commercial |
| Kita e. White Illumination | JP | 1999-03-18 |
Hudson Soft | Commercial |
| Kita e. White Illumination - Pure Songs and Pictures | JP | |
| Commercial |
| Kitahei Gold | JP | 1999-11-18 |
NetVillage | Commercial |
| Kiteretsu Boy's Gangagan | JP | 2000-04-27 |
Sega | Commercial |
| Konohana - True Report | JP | 2001-04-26 |
Success | Commercial |
| Konohana 2 - Todokanai Requiem | JP | 2002-11-28 |
Success | Commercial |
| Kuon no Kizuna - Sairinshou | JP | 2000-05-18 |
Fog | Commercial |