| name | games | status | region | founded | closed | activity | |
|---|
| I-Imagine |
5 | | | | | 2002/2007 | |
| I-Motion Interactive |
3 | | | | | 1992/1996 | |
| I-play |
32 | bought | UK | 1998 | | 1995/2010 * | Mobile phone games publisher/developer. Taken over by Oberon Media in 2007 |
| I.G.R. |
3 | | IT | | | 1980/1983 | |
| I.G.S. |
40 | active | | 1990 | 2001 | 1991/2008 | Short for 'International Games System' |
| I.Magic |
2 | | JP | | | 1998/2003 | |
| I.R.G. |
1 | | | | | 1983/1983 | |
| I.S.C. |
4 | | JP | | | 1991/1993 | To not be confounded with ISC |
| I'MAX |
52 | dead | JP | | 1998 | 1990/2002 | Founded by Kazuo Imanari, and formed by former Namco employees. |
| i4 |
4 | | JP | | | 1998/2004 | |
| I4 Corporation |
3 | | | | | 1999/2005 | |
| i6 Games |
2 | | | | | | |
| Iber Soft |
32 | | ES | | | 1986/1990 | |
| IBIS |
3 | | | | | 1995/1997 | |
| IBM |
96 | active | US | 1911 | | 1952/2008 | |
| IC&D |
1 | dead | UK | 1985 | 1987 | 1986/1986 | |
| Icarus |
2 | | | | | 1999/1999 | |
| Icarus Studios |
4 | | | | | 2009/2012 | |
| Icculus |
31 | active | WOR | | | 1999/2018 | On 2017-08-21 Icculus (Ryan C. Gordon) announced that he was fully funded by Patreon … |
| Ice Adventure |
1 | | IN | | | | |
| Ice Cool Coders |
1 | dead | UK | | | 1987/1987 | |
| Ice Game Studios |
1 | active | SE | | | 2010/2010 | Website: http://www.icegamestudios.com |
| Ice Water Games |
4 | | US | | | 2014/2017 | |
| Ice-Pick Lodge |
9 | active | RU | 2002 | | 2005/2019 | Website: http://www.ice-pick.com |
| ICE |
22 | | UK | | | 1989/1997 | From Glasgow, Scotland. |
| Iceberg Interactive |
58 | active | US | 2007 | | 2007/2024 | |
| Ichikawa |
2 | | | | | 1997/1999 | |
| Icholon |
2 | | | | | 2005/2007 | |
| Icing Candy |
3 | | | | | 2009/2012 | |
| Icom Simulations |
46 | bought | US | 1980 | 1994 | 1985/1993 | |
| Icon Design |
69 | dead | UK | 1986 | 1989 | 1986/1989 | |
| Icon Games |
13 | | | | | 2007/2011 | |
| Icon Software |
19 | | | | | 1984/1985 | |
| ICS |
10 | | | | | 1983/2001 | |
| id Software |
129 | active | US | 1991 | | 1990/2021 * | Founders: John Carmack, John Romero, Tom Hall, Adrian Carmack HQ: Mesquite, Texas … |
| Idea Factory |
211 | active | JP | 1996 | | 1996/2023 | |
| Idea Software |
17 | | IT | | | 1986/1992 | |
| Idea-Tek |
6 | | | | | 1990/1992 | |
| Idealogic |
19 | | ES | | | 1984/1987 | |
| Ideas From the Deep |
5 | | | | | 1989/2005 | |
| Ideas Pad |
3 | | | | | 2010/2012 | |
| IdeaWorks 3D |
5 | | | | | 2003/2009 | |
| Ides |
36 | | | | | 1992/1997 | |
| IDHAS Studios |
10 | | | | | 2011/2017 | |
| Idi Produktions |
2 | | | | | 1983/1983 | |
| Idol Minds |
9 | | | | | 1998/2007 | |
| IDSI Innovative Design Software |
9 | | | | | 1981/1984 | |
| IE Institute |
10 | | | | | 2006/2011 | |
| IFun4all |
11 | | | | | 2010/2016 | |
| IGames Entertainment |
1 | | IN | | | | |
