| Indora no Hikari | 1987 | nes |
| Inferno Climber: Reborn | 2019 | ps4 |
| Infinite Adventures | 2018 | xboxone |
| Infinite Space | 2009 | nds |
| Infinite Undiscovery | 2008 | xbox360 |
| Infinity | | gbc |
| Inheritors of the Oubliette | 2021 | gba |
| Innocent Tears | 2002 | xbox |
| Inscryption | 2022 | ps4, switch |
| InuYasha - Secret of the Divine Jewel | 2007 | nds |
| Inuyasha | 2001 | ps1 |
| Iris no Atelier - Eternal Mana | 2004 | ps2 |
| Iron Feather | 2006 | nds |
| Iron Master - The Legendary Blacksmith | 2009 | nds |
| Iron Master - Wanggugui Yusangwa Segaeui Yeolsoe | 2009 | nds |
| Is It Wrong to Try to Pick Up Girls in a Dungeon? Infinite Combat | 2019 | ps4, switch |
| Islands of Wakfu | 2011 | xbox360 |
| Item Getter - Bokura no Kagaku to Mahou no Kankei | 2009 | nds |
| Itoi Shigesato no Bass Tsuri No. 1 | 1997 | snes |
| Itsuka Kono Te ga Kegareru Toki ni - Spectral Force Legacy | 2009 | psp |
| Itsuwari no Rondo | 2007 | nds |
| Izuna - Legend of the Unemployed Ninja | 2006 | nds |
| Izuna 2 - The Unemployed Ninja Returns | 2007 | nds |
| Jack Move | 2022 | ps4, switch, xboxone |
| Jack no Daibouken - Daimaou no Gyakushuu | 2000 | gbc |
| Jade Cocoon - Story of the Tamamayu | 1998 | ps1 |
| Jade Cocoon 2 | 2001 | ps2 |
| Jade Empire | 2005 | xbox |
| Jade Empire - Hisui no Teikoku | 2005 | xbox |
| Jagged Alliance | 2011 | nds |
| Jajamaru Gekimaden - Maboroshi no Kinmajou | 1990 | nes |
| Jajamaru Ninpou Chou | 1989 | nes |
| Jaseiken Necromancer | 1988 | pcengine |
| Jeanne d'Arc | 2006 | psp |
| Jet Set Knights | 2020 | ps4 |
| Jianxia Qingyuan | | nes |
| Jibaku-kun - Rei no Itsuki no Kajitsu | | gbc |
| Jijia Zhanshi | 1991 | nes |
| Jikan de Fantasia | 2011 | psp |
| Jikandia - The Timeless Land | 2011 | psp |
| Jikuu Senki Mu | 1991 | gb |
| Jikuu Yuuden - Debias | 1987 | nes |
| Jin Yeosin Jeonsaeng IV | 2014 | 3ds |
| Jingke Xin Zhuan | 1992 | nes |
| Jinyong Qun Xia Zhuan - Shu Jian Jiangshan | | nes |
| Jisedai Begoma Battle Beyblade | 1999 | gbc |
| JoJo no Kimyou na Bouken | 1993 | snes |
| Joe Dever's Lone Wolf | 2016 | ps4, switch, xboxone |
| John Romero's Daikatana | 2000 | gbc |
| Journey to the West | 1992 | svision |
| Judie no Atelier - Gramnad no Renkinjutsushi | 2002 | ps2 |
| Judie no Atelier - Gramnad no Renkinjutsushi - Toraware no Moribito | 2010 | psp |
| Juka and the Monophonic Menace | 2005 | gba |
| Jungle Wars | 1991 | gb |
| Jungle Wars 2 - Kodai Mahou Atimos no Nazo | 1993 | snes |
| Just Breed | 1992 | nes |
| Justice Chronicles | 2016 | 3ds |
| Justice League Heroes | 2006 | nds, ps2, psp, xbox |
| Juukou Senki Bullet Battlers | 1999 | gbc |
| Juushin Enbu DS | 2007 | nds |
| Juvei Quest | 1991 | nes |
| KO Seiki Beast Sanjuushi - Gaia Fukkatsu - Kanketsu-hen | 1994 | pcengine |
| Kabuki Rocks | 1994 | snes |
| Kaeru B Back | 2002 | gba |
| Kagero - Mou Hitori no Princess | 2015 | vita |
| Kagerou Densetsu | 1990 | nes |
| Kaibutsu Para-Dice - Monster Paradise | 1997 | ps1 |
| Kaijuu Monogatari | 1988 | nes |
| Kaite, Shabette, Hajimeyou! - Monster Farm DS | 2007 | nds |
| Kakurenbo Battle - Monster Tactics | 2000 | gbc |
| Kakutou Ryouri Densetsu Bistro Recipe - Gekitou Foodon Battle Hen | 1999 | gbc |
| Kakutou Ryouri Densetsu Bistro Recipe - Kettou Bistgarm Hen | 1999 | gbc |
| Kalin no Tsurugi | 1987 | fds |
| Kamen Rider - Battride War - Premium TV Sound Edition | 2014 | ps3 |
| Kami Jigen Game Neptune V | 2013 | ps3 |
| Kamiko | 2017 | switch |
| Kamisama to Unmei Kakumei no Paradox | | ps3 |
| Karakuri Kengou Den Musashi Lord - Karakuribito Hashiru | 1991 | nes |
| Kartia - The Word of Fate | 1998 | ps1 |
| Kaseki Horider - Mugen Gear | 2014 | 3ds |
| Kaseki Sousei Reborn | 1997 | gb |
| Kaseki Sousei Reborn II - Monster Digger | 1999 | gbc |
| Katekyoo Hitman Reborn! DS - Fate of Heat - Honoo no Sadame | 2008 | nds |
| Katekyoo Hitman Reborn! DS - Fate of Heat II - Unmei no Futari | 2009 | nds |
| Katekyoo Hitman Reborn! DS - Fate of Heat III - Yuki no Shugosha Raishuu! | 2010 | nds |
| Kawa no Nushi Tsuri | 1990 | nes |
| Kawa no Nushi Tsuri 2 | 1995 | snes |
| Kawa no Nushi Tsuri 3 | 1997 | gb |
| Kawa no Nushi-tsuri - Hikyou o Motomete | 1998 | ps1 |
| Kawa no Nushitsuri - Shizen-ha | 1992 | pcengine |
| Kawaii Pet Shop Monogatari | 1999 | gbc |
| Kawaii Pet Shop Monogatari 2 | 2000 | gbc |
| The Keep | 2014 | 3ds |
| Keitai Denjuu Telefang - Power Version | 2000 | gbc |
| Keitai Denjuu Telefang - Speed Version | 2000 | gbc |
| Keitai Denjuu Telefang 2 - Power | 2002 | gba |
| Keitai Denjuu Telefang 2 - Speed | 2002 | gba |
| Ken to Mahou to Gakuen Mono | 2009 | psp |
| Ken to Mahou to Gakuen Mono. 2 | 2013 | psp |
| Ken to Mahou to Gakuen Mono. 3 | 2010 | ps3, psp |