| Kidou Keisatsu Patlabor - 98-Shiki Kidou Seyo! | 1992 | genesis |
| Kidou Keisatsu Patlabor - Nerawareta Machi 1990 | 1990 | gb |
| Kidou Senkan Nadesico - The Blank of 3 Years | 1998 | saturn |
| Kidou Senkan Nadesico - Yappari Saigo wa Ai ga Katsu | 1997 | saturn |
| Kidou Shinsengumi - Moe yo Ken | 2002 | ps2 |
| Kieta Princess | 1986 | fds |
| Killer Frequency | 2023 | switch |
| Kim Possible - Global Gemini | 2007 | nds |
| Kimi ga Aruji de Shitsuji ga Ore de - Otsukae Nikki | 2008 | ps2 |
| Kimi ga Aruji de Shitsuji ga Ore de - Otsukae Nikki Portable | 2012 | psp |
| Kimi ga Nozomu Eien | 2002 | dreamcast |
| Kimi ga Nozomu Eien - Rumbling Hearts | 2003 | ps2 |
| Kimi ni Todoke - Sodateru Omoi | 2009 | nds |
| Kimi no Hitomi ni Hit Me | 2018 | vita |
| Kimi o Aogi Otome wa Hime ni | 2016 | vita |
| Kimi wa Yukima ni Koinegau | 2021 | switch |
| KimiKiss | 2006 | ps2 |
| KimiSuta - Kimi to Study | 2006 | ps2 |
| Kimikare - Shingakki | 2012 | psp |
| Kin'iro Loveriche | 2020 | ps4 |
| Kin'iro Loveriche | 2017 | vita |
| Kin'iro Loveriche: Golden Time | 2021 | ps4 |
| Kin'iro no Corda - Octave | 2019 | vita |
| Kin'iro no Corda 2f | | psp |
| Kin'iro no Corda 2f Encore | 2009 | psp |
| Kind Gal's | 1987 | fds |
| Kindaichi Shounen no Jikenbo - 10 Nenme no Shoutaijou | 2000 | gbc |
| Kindaichi Shounen no Jikenbo - Akuma no Satsujin Koukai | 2009 | nds |
| Kindaichi Shounen no Jikenbo - Hihou-tou Arata naru Sangeki | 1996 | ps1 |
| Kindaichi Shounen no Jikenbo - Hoshimitou Kanashimi no Fukushuuki | 1998 | saturn |
| Kindaichi Shounen no Jikenbo - Jigoku Yuuen Satsujin Jiken | 1998 | ps1 |
| Kindaichi Shounen no Jikenbo 3 - Seiryuu Densetsu Satsujin Jiken | 1999 | ps1 |
| Kinect Adventures | 2010 | xbox360 |
| King Kong 2 - Ikari no Megaton Punch | 1986 | nes |
| King Neptune's Adventure | 1990 | nes |
| The King of Fighters Kyou | 1998 | ps1 |
| King of the Mountain | 1982 | intv |
| King's Quest | 2015 | ps3, ps4, xboxone |
| King's Quest - Quest for the Crown | 1989 | sms |
| King's Quest - The Complete Collection | 2016 | xbox360 |
| King's Quest V | 1992 | nes |
| Kingdom - The Far Reaches | 1995 | 3do |
| Kingdom - The Far Reaches | 1995 | cdi |
| Kingdom: New Lands | 2016 | ps4, switch, xboxone |
| Kingdom: Two Crowns | 2018 | ps4, switch, xboxone |
| Kingmaker: Rise to the Throne | 2018 | ps4, xboxone |
| Kiniro no Corda 2 Forte | | psp |
| Kiniro no Corda 3 - Another Sky feat. Amane Gakuen | 2014 | psp |
| Kiniro no Corda 3 - Another Sky feat. Jinnan | 2014 | psp |
| Kiniro no Corda 3 - Another Sky feat. Shiseikan | 2014 | psp |
| Kiniro no Corda 3 - Full Voice Special | 2013 | psp |
| Kino no Tabi - The Beautiful World | 2003 | ps2 |
| Kino no Tabi II - The Beautiful World | 2005 | ps2 |
| Kira Kira - Rock 'N' Roll Show | 2009 | ps2 |
| Kirameki School Life SP - The Wonder Years | 2012 | psp |
| Kirby - Canvas Curse | 2005 | nds, wiiu |
| Kirby's Epic Yarn | 2010 | wii |
| Kisaragi Gold Star - Nonstop Go Go!! | 2013 | psp |
| Kisekae Series 3 - Kisekae Hamster | 2001 | gbc |
| Kisekko Gurumii - Chesty to Nuigurumi-tachi no Mahou no Bouken | 2003 | gba |
| Kishin Houkou Demonbane | 2004 | ps2 |
| Kiss Ato | 2015 | vita |
| Kiss Yori... - Seaside Serenade | 1999 | ws |
| KissBell | 2014 | vita |
| Kita e. - Diamond Dust | | ps2 |
| Kita e. - Diamond Dust+ - Kiss Is Beginning | 2004 | ps2 |
| Kita e. White Illumination | 1999 | dreamcast |
| Kitakata Kenzou Sangokushi | 2001 | ps2 |
| Kizuna toyuu Na no Pendant with Toybox Stories | 2000 | ps1 |
| Klaymen Klaymen - Neverhood no Nazo | 1998 | ps1 |
| Knee Deep | 2017 | xboxone |
| Koala Brothers - Outback Adventures | 2006 | gba |
| Kochira, Haha Naru Hoshi Yori | 2021 | switch |
| Koden Koureijutsu - Hyaku Monogatari - Honto ni Atta Kowai Hanashi | 1997 | saturn |
| Koezaru wa Akai Hana - Koi wa Tsuki ni Michibikareru | 2016 | vita |
| Koh-Lanta | 2004 | nds, wii |
| Koh-Lanta - Survie dans la Jungle! | 2004 | nds |
| Koi | 2016 | ps4, vita |
| Koi DX | 2017 | switch |
| Koi DX | 2017 | wiiu |
| Koi Sentai - Love and Peace the P.S.P. - Power Zenkai! Special Youso Tenkomori de Portable-ka Daisakusen de aru! | 2012 | psp |
| Koi Suru Otome to Shugo no Tate - The Shield of AIGIS | 2008 | ps2 |
| Koi Suru Otome to Shugo no Tate Portable | 2010 | psp |
| Koi to Senkyo to Chocolate Portable | 2012 | psp |
| Koi wa Rule ni Shibararenai! | 2012 | psp |
| Koibana Days - Pure Flower Garden | 2013 | psp |
| Koihime Musou - Doki Otome Darake no Sangokushi Engi | 2008 | ps2 |
| Koinu to Issho - Aijou Monogatari | 2003 | gba |
| Koisuru Otome to Shugo no Tate - Bara no Seibo | 2016 | vita |
| Koiyohou | 2001 | ps1 |
| Kojin Kyouju - La Lecon Particuliere | 1998 | ps1 |
| Kokoro Connect - Yochi Random | 2012 | psp |
| Kokoro no Tobira | 2004 | ps2 |
| Kokuu Hyouryuu - Nirgends | 1996 | pcfx |
| Komorebi no Namikimichi - Utsurikawaru Kisetsu no Naka de | 2004 | ps2 |
| Kona | 2017 | switch, xboxone |
| Konami Wai Wai World | 1988 | nes |
| Konneko - Keep a Memory Green | 2005 | ps2 |
| Konneko - Keep a Memory Green | 2011 | psp |
| Kono Aozora ni Yakusoku o | 2015 | vita |