| name | games | status | region | founded | closed | activity | |
|---|
| Athena |
73 | nomoregames | JP | 1987 | | 1988/2002 | |
| Atlantean Interactive |
4 | | | | | 1996/1997 | |
| Atlantis Gold |
1 | | | | | 1985/1985 | |
| Atlantis Interactive Entertainment |
3 | | | | | 2004/2006 | |
| Atlantis Software |
194 | | UK | 1983 | 1991 | 1982/1992 * | |
| Atlas Adventure Software |
9 | | | | | 1987/1992 | |
| Atlus |
442 | active | JP | 1986 | | 1986/2024 | Atlus Co., Ltd. is a Japanese video game developer, publisher and distribution company … |
| Atmark |
8 | | | | | 2001/2002 | |
| Atod |
9 | bought | SE | 1992 | 2003 | 1992/2001 | Formerly known as "Crosstechnics". Merged with Warthog Games and renamed … |
| Atom Mobile Applications |
1 | | UK | | | | |
| Atomic Games |
28 | | | | | 1991/2024 | Close Combat serie. |
| Atomic Planet |
19 | | | | | 2002/2010 | |
| Atomic Planet Entertainment |
18 | | | | | 2002/2008 | |
| Atomic Software |
2 | | | | | 1991/1992 | |
| Atooi |
3 | | | | | 2017/2024 | |
| ATP Projects |
12 | | | | | 2004/2016 | |
| Atreid Concept |
18 | | | | | 1990/1995 | |
| ATS |
5 | | | | | 1982/1983 | |
| Attention to Detail |
25 | | | | | 1990/2003 | |
| Attic Entertainment Software |
15 | dead | DE | 1990 | 2001 | 1989/1999 * | Attic Entertainment Software GmbH Founders: Hans-Jürgen Brändle, Jochen Hamma … |
| ATW |
5 | | TW | | | 1979/1984 | |
| Atypical Alchemists Associate |
3 | | | | | 1998/2003 | |
| Atypical Games |
5 | | | | | 2015/2018 | |
| Audiogenic |
187 | active | UK | 1985 | | 1981/1996 * | Published its last new title in 1997 however still in existence and continues to … |
| August |
9 | | | | | 2004/2014 | |
| Auran |
11 | | | | | 1997/2010 | |
| Auran Games |
2 | | | | | 2007/2008 | |
| Auric Vision |
9 | | | | | 1996/2015 | |
| Auroch Digital |
6 | active | UK | | | 2013/2018 | HQ: Bristol Website: http://aurochdigital.com |
| Aurora Feint |
4 | | | | | 2008/2008 | |
| Aurora44 |
2 | | | | | 2018/2018 | |
| author |
9619 | active | WOR | 0 | | 1947/2024 | These games are not by any named company or organisation. |
| Automata UK |
38 | | | 1982 | 1986 | 1982/1985 | |
| Autumn Games |
6 | | | | | 2011/2016 | |
| AV Artisan |
4 | | | | | 1993/1995 | |
| AV Japan |
10 | | | | | 1983/1994 | |
| Avalanche |
4 | | USA | | | 1999/2006 | Console developers |
| Avalanche Software |
54 | | US | 1995 | | 1996/2017 | |
| Avalanche Studios |
30 | | SE | 2003 | | 2006/2022 | |
| Avallon Alliance |
3 | | | | | 2009/2012 | |
| Avalon Hill |
271 | bought | US | 1952 | 1998 | 1978/1997 | |
| Avalon Software |
4 | | | | | 1984/1984 | |
| Avanquest Software |
10 | | | | | 2009/2015 | |
| Avant Garde |
1 | | | | | 1991/1991 | |
| Avant-Garde Creations |
36 | | US | | | 1980/1985 | |
| Avantage Software |
8 | dead | US | | | 1984/1989 | Budget label of Accolade |
| Aventuras AD |
37 | | ES | | | 1988/1992 | |
| Aventurine |
2 | | | | | 2009/2012 | |
| AVIC |
2 | | | | | 1983/1983 | |
| AVS |
6 | | | | | 1983/1984 | |
