| name | games | status | region | founded | closed | activity | |
|---|
| Jaleco |
304 | dead | JP | 1974 | 2014 | 1982/2010 | Subsidiary: Jaleco USA History: Jaleco Ltd. was founded as Japan Leisure Corporation … |
| Japan DataWorks |
2 | dead | JP | 1992 | | 1994/1994 | |
| Japan Studio |
159 | dead | JP | 1993 | 2021 | 1994/2017 | Japan Studio frequently assisted on development for many PlayStation games. In … |
| Japan System Supply |
7 | bought | JP | 1985 | | 1991/1998 | Japan System Supply Ltd. (日本システムサプライ株式会社) was an Osaka … |
| Jupiter |
46 | active | JP | 1992 | | 1992/2024 | Founded by Makoto Nakayama. |
| JVC |
50 | | JP | 1927 | | 1990/2001 | |
| K Amusement Leasing |
14 | | JP | | | 1986/1992 | |
| Kadokawa Shoten |
79 | active | JP | 1993 | | 1993/2022 | |
| Kairosoft |
41 | active | JP | | | 2010/2023 | Website: http://kairopark.jp |
| Kaneko |
60 | dead | JP | 1980 | 2007 | 1982/2002 | Kaneko Seisakusho, also referred to as Kaneko Co. Ltd., was a Japanese video game … |
| Kasco |
1 | dead | JP | 1968 | 1978 | 1973/1973 | Kasco (also known as Kansai Seiki Seisakusho Co.) was a Japanese arcade game manufacturer … |
| Kawada |
4 | | JP | | | 1986/1990 | |
| KAZe |
13 | dead | JP | 1987 | | 1990/2004 | Formerly known as Live Planning. |
| KCE Japan |
40 | bought | JP | | 2005 | 1999/2005 | |
| KCE Kobe |
11 | | JP | | | 1999/2001 | Konami Computer Entertainment Kobe. The team has been absorbed into IGA's … |
| KCEO |
34 | | JP | 1995 | | 1996/2003 | |
| KCET |
58 | dead | JP | 1994 | 2005 | 1994/2006 | Konami Computer Entertainment Tokyo. Konami absorbed KCET along with several of … |
| Kemco |
185 | active | JP | 1984 | | 1985/2024 | |
| Key |
14 | active | JP | 1998 | | 1999/2016 | Key is a Japanese visual novel studio which formed on July 21, 1998 as a brand under … |
| KID |
126 | dead | JP | 1988 | 2006 | 1989/2013 | Filed for bankruptcy in 2006, all intellectual property moved to CyberFront. … |
| King Records |
36 | | JP | 1931 | | 1987/2004 | |
| Kirara |
10 | | JP | | | 1987/1991 | |
| KISS |
75 | active | JP | 1999 | | 1999/2017 | Not to be confused with the British KISS Ltd company. Website: http://www.kisskiss … |
| Koei |
582 | name changed | JP | 1978 | 2010 | 1982/2015 | Koei changed its name to Tecmo Koei Games on April 1, 2010 by absorbing Tecmo, and … |
| Koei Tecmo |
135 | active | JP | 2009 | | 2009/2022 | In addition to its primary trademark, Koei Tecmo Games occasionally used until 2016 … |
| Kogado Studio |
93 | active | JP | 1916 | | 1985/2017 | |
| Kohgakusha |
3 | active | JP | 1976 | | 1980/1982 | Foremost a magazine and book company specialized on IT print media. Most famous … |
| Konami |
2105 | active | JP | 1969 | | 1978/2023 | |
| KSS |
61 | dead | JP | 1991 | 2001 | 1991/2001 | |
| Kural |
1 | | JP | | | 1981/1981 | |
| Kure Software Koubou |
11 | | JP | | | 1986/1996 | |
| Kyugo Boueki |
6 | dead | JP | | | 1985/1991 | |
| Laser Soft |
15 | bought | JP | 1988 | | 1989/1993 | Subsidiary of Telenet Japen and merged in 1991 with Wolfteam. |
| Lass |
4 | | JP | | | 2004/2011 | Website: http://lass.jp |
| Lenar |
12 | dead | JP | 1986 | | 1986/1994 | |
| Level-5 |
54 | active | JP | 1998 | | 2000/2018 | Level-5 Inc. レベルファイ Founder: Akihiro Hino Website: http://www … |
| light |
18 | | JP | | | 2000/2017 | |
| Live Planning |
4 | name changed | JP | 1987 | 1990 | 1987/1990 | Predecessor of KAZe. |
| Macadamia |
5 | | JP | 1986 | 1986 | 1985/1986 * | |
| Mages |
87 | active | JP | 2005 | | 2008/2023 | |
| Magical Company |
25 | | JP | 1993 | | 1992/2004 * | Up to 1993 this Japanese developer was known as "Home Data". |
| Magnetic Realms |
7 | active | JP | | | 2013/2016 | Founder: Matt Fielding HQ: Tokyo Website: http://www.magneticrealms.com |
| Mainichi Broadcasting System |
8 | active | JP | 1950 | | 1995/2008 | Mainichi Broadcasting System, Inc. (株式会社毎日放送/MBS) is a broadcasting … |
| Make Software |
13 | nomoregames | JP | 1989 | | 1990/1998 | |
| MangaGamer |
38 | active | JP | 2008 | | 2003/2021 * | Publisher focused on localizing and republishing previously Japanese only titles … |
| Manjyudo |
2 | | JP | | | 1990/1992 | |
| Marionette |
23 | bought | JP | 1984 | | 1986/2005 | Now a part of Global A Entertainment. |
| Marucome |
3 | | JP | | | 2001/2012 | |
| Marvelous Interactive |
50 | active | JP | 1970 | | 2002/2020 | |
| Marvelous |
142 | active | JP | 1997 | | 1999/2021 | Marvelous Entertainment Inc. The MMV abbreviation, found in the company logo, stands … |
