Gray Matter
Companies
Gremlin (Infogrames Sheffield House)
Gremlin Interactive Ltd.
Grezzo
Grezzo Co., Ltd.
Grip Studios
GRIP Digital, s.r.o.
Groove Box Japan
GT Interactive Software
GT Interactive Software Corp.
Guerrilla Cambridge (Millennium Interactive)
Guerrilla Games
Guerrilla B.V.
Gust
Gust Co., Ltd.
Gusto Games
H2O
Haemimont Games
HAKAMA
Hakama Inc.
HAL Laboratory
HAL Laboratory, Inc.
Halo Studios (343 Industries)
Halo Studios (formerly 343 Industries)
HandyGames
Hangar 13
Hanimex
Harmonix Music Systems
Harmonix Music Systems, Inc.
Hazelight
Hazelight Studios AB
HB Studios
HeadGames
Heart Beat
Heart Beat Co., Ltd.
Heavy Iron Studios
Heavy Iron Studios, Inc.
Hector
Hello Games
Hello Games Ltd
Herobeat Studios
HexaDrive
HexaDrive Inc.
Hi-Star Electronics
High Score Productions
High Voltage Software
High Voltage Software, Inc.
Historia
Hitmaker (Sega AM3)
Hitmaker Co., Ltd.
Holocronet
Home Data
HORI
HORI Co., Ltd.
Horny
Housemarque
Hudson Soft
Hudson Soft Company, Limited
Human Entertainment
Human Co., Ltd.
Human Head Studios
HuneX
id software
id Software LLC
Idea Factory
Idol Minds
IE Institute
IE Institute Co., Ltd. (株式会社アイイーインスティテュート)
Ignition Entertainment
Iguana Entertainment
ILCA
Image & Form Games
Image & Form International AB
Imagineer
Imagineer Co., Ltd.
Imagineering
Impulse Gear
Incredible Technologies
Indie Built (Access Software/Salt Lake Games Studio/Indie Games)
indieszero
indieszero Co., Ltd.
Infinity Ward
Infogrames
Infogrames Entertainment SA
iNiS
LIONA Interactive
Insomniac Games
Insomniac Games, Inc.
Intelligent Systems
Intelligent Systems Co., Ltd.
Inter State
InterAct Accessories (STD Entertainment)
InterAct Accessories Inc.
Interplay
Interprog
InXile Entertainment
io interactive
IO Interactive A/S
Irem
Irem Software Engineering, Inc.
Iron Galaxy Studios
Iron Lore Entertainment
Irrational Games
ISCO
Ivory Tower
J-Wing
Jaleco
Jaleco Ltd.
Jay Geertsen
John Sands
John Sands Electronics
Joindots
joindots GmbH
Jorudan
Jorudan Co., Ltd. (ジョルダン株式会社)
JoWooD
JoWooD Entertainment AG
Juice Games (THQ Digital Studios Warrington)
Juice Games Ltd.
Jupiter
Jupiter Corp. (株式会社ジュピター)
Jupiter
Jupiter Corp.
Just Add Water
Kadokawa
KADOKAWA CORPORATION
Kalisto Entertainment
Kalisto Entertainment SA
Kalypso
Kaneko
Kaneko Co., Ltd.
Kaos (Softstone)
Karaclan
Kaylee
Keen Games
Kemco
Kotobuki Solution Co., Ltd. (Kemco)
Ken Chen
KID (Kindle Imagine Develop)
Kindle Imagine Develop (KID) Corp.
King Art Games
King Records
King Record Co., Ltd.
Kōdansha
Koei
Koei Co., Ltd.
Koei Tecmo