| Hyakka Yakou | | vita |
| Hyaku Monogatari - Honto ni Atta Kowai Hanashi | 1995 | pcengine |
| Hyaku Monogatari - Kaidan Romance | 2013 | psp |
| I Doll U | 2015 | vita |
| IdolDays | 2021 | switch |
| The Idolm@ster - Gravure for You! Vol. 4 | 2012 | ps3 |
| The Idolm@ster - Gravure for You! Vol. 6 | 2012 | ps3 |
| The Idolm@ster - Gravure for You! Vol. 9 | 2012 | ps3 |
| If Found... | 2020 | switch |
| If My Heart Had Wings | 2019 | switch |
| Illusion of Itehari | 2024 | switch |
| Imabikisou | 2007 | ps3 |
| Inagawa Junji - Mayonaka no Taxi | 2001 | ps1 |
| Inoue Mami - Kono Hoshi ni Tatta Hitori no Kimi | 1992 | pcengine |
| Instant Brain | 2011 | xbox360 |
| Interlude | 2003 | dreamcast, ps2 |
| Inugamike no Ichizoku | 2009 | nds |
| Inuwashi: Urabure Tantei to Ojou-sama Keiji no Ikebukuro Jiken File | 2020 | ps4, switch |
| Iris | 2003 | dreamcast, ps2 |
| Irotoridori no Sekai - World's End Re-Birth | 2015 | vita |
| Island | 2017 | ps4, vita |
| Island | 2021 | switch |
| Island Days | 2014 | 3ds |
| Iwaihime - Matsuri | 2017 | vita |
| IxShe Tell | 2020 | switch, vita |
| Izumo | 2004 | dreamcast |
| Izumo 2 - Gakuen Kyousoukyoku Double Tact | 2008 | ps2 |
| J-Thunder - Tsumetai Hada wa Shoujo o Nurasu | 1990 | pcengine |
| Jack Jeanne | 2021 | switch |
| Jake Hunter Detective Story - Memories of the Past | 2007 | nds |
| Jewelic Nightmare | 2013 | psp |
| Jinki Resurrection | 2021 | ps4 |
| Jinro Game | 2015 | vita |
| Jisei: The First Case HD | 2020 | ps4 |
| Joshikousei Game's-High!! | 2006 | ps2 |
| KLAP!! - Kind Love and Punish | 2015 | vita |
| KLAP!! - Kind Love and Punish - Fun Party | 2017 | vita |
| Kadenz Fermata - Akkord - Fortissimo | 2014 | vita |
| Kaen Seibo - The Virgin on Megiddo | 2001 | dreamcast |
| Kaeru Batake de Tsukamaete - Natsu Chigira Sansen! | 2015 | vita |
| Kaidan Restaurant - Zoku! Shin Menu 100-sen | 2011 | nds |
| Kaihou Shoujo - Sin | 2013 | ps3 |
| Kaihou Shoujo SIN | 2014 | vita |
| Kajiri Kamui Kagura - Akebono no Hikari | 2013 | vita |
| Kakyuusei | 1997 | saturn |
| Kaleido Eve | 2015 | psp |
| Kamaitachi no Yoru - Rinne Saisei | 2017 | vita |
| Kamaitachi no Yoru ×3 | 2024 | ps4, switch |
| Kamidanomi Shisugite Ore no Mirai ga Yabai | 2017 | vita |
| Kamigami no Asobi | 2013 | psp |
| Kamigami no Asobi InFinite | 2016 | vita |
| Kannagi no Mori - Satsukiame Tsuzuri | 2019 | vita |
| Kanojo Step | 2018 | vita |
| Kanon | 2000 | dreamcast, ps2 |
| Karumaruka - Circle | 2017 | ps4, vita |
| Katahane - An' Call Belle | 2018 | vita |
| Kaze no Uta | 2004 | dreamcast |
| Kazoku Keikaku - Re - Tsumugu Ito | 2013 | ps3 |
| Kazoku Keikaku - Re-Tsumugu Ito | 2014 | vita |
| Keiji J.B. Harold no Jikenbo - Murder Club | 2008 | nds |
| Ken ga Kimi - Momoyo Tsuzuri | 2016 | vita |
| Ken ga Kimi for V | 2015 | vita |
| Kenka Banchou Otome | | vita |
| Kenshuui Tendo Dokuta | 2004 | nds |
| Kimi ga Nozomu Eien | 2002 | dreamcast |
| Kimi no Hitomi ni Hit Me | 2018 | vita |
| Kimi o Aogi Otome wa Hime ni | 2016 | vita |
| Kimi wa Yukima ni Koinegau | 2021 | switch |
| Kin'iro Loveriche | 2020 | ps4 |
| Kin'iro Loveriche | 2017 | vita |
| Kin'iro Loveriche: Golden Time | 2021 | ps4 |
| Kin'iro no Corda - Octave | 2019 | vita |
| 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 |
| Kirameki School Life SP - The Wonder Years | 2012 | psp |
| Kisaragi Gold Star - Nonstop Go Go!! | 2013 | psp |
| Kiss Ato | 2015 | vita |
| KissBell | 2014 | vita |
| Kita e. - Diamond Dust | | ps2 |
| Kochira, Haha Naru Hoshi Yori | 2021 | switch |
| Koezaru wa Akai Hana - Koi wa Tsuki ni Michibikareru | 2016 | vita |
| Koibana Days - Pure Flower Garden | 2013 | psp |
| Koisuru Otome to Shugo no Tate - Bara no Seibo | 2016 | vita |
| Kokoro Connect - Yochi Random | 2012 | psp |
| Komorebi no Namikimichi - Utsurikawaru Kisetsu no Naka de | 2004 | ps2 |
| Kono Aozora ni Yakusoku o | 2015 | vita |
| Kono Oozora ni, Tsubasa o Hirogete - Cruise Sign | 2014 | ps3 |
| Kono Uta ga Owattara - When This Song is Over | 2014 | vita |
| KonoSuba: God's Blessing on this Wonderful World! Love for this Tempting Attire | 2020 | switch |
| Koroshiya to Strawberry | 2018 | vita |
| Kotodama: The 7 Mysteries of Fujisawa | 2019 | ps4, switch |
| Kud Wafter - Converted Edition | 2013 | psp, vita |
| Kujiragami no Tearstilla | 2016 | vita |
| KukkoroDays | 2020 | switch |
| Kuon no Kizuna - Sairinshou | 2000 | dreamcast |
| Kurayami no Hate de Kimi o Matsu | 2009 | nds |
| Kurenai no Homura - Sanada Ninpou Chou | | vita |
| Kuroshitsuji - Phantom & Ghost | 2009 | nds |