DEVELOPERS
- H2O Entertainment
- H2O Interactive
- Hack Berry
- Hacker International
- Hakuhodo
- Hal
- HAL Labs
- Halestorm
- Halfbrick Studios
- Hammerhead
- HammerHead Ltd
- Hamster
- Hamster Co
- Hanayama
- Handheld Games
- Hands-On Entertainment
- Hanson
- Happy-Smile
- Harvest One
- Hasbro Interactive
- Haus Teknikka
- HeadGames
- HEADROOM
- Heart Beat
- Heart Beat / Tamtam / Tose Software
- Hearty Robin
- Heavy Iron Studios
- Hect
- Hector Playing Interface
- Helixe
- Hertz
- HES Interactive
- Hidden Floor
- High Score Productions
- High-Tech Lab Japan
- High Voltage Software
- High Voltage Software, Inc
- Highwaystar
- Hip Games
- Hiro
- Hitmaker
- Hitmen Productions
- Hoi
- Hokus Pokus
- Hokusho
- Home Data
- Hookstone
- Hookstone Productions
- Hoplite Research LLC
- Hori
- Horisoft
- Hot-B
- Hot House
- HotGen
- HotGen Studios Ltd
- Hothouse Creations
- Hothouse Creations Ltd
- Hudson
- Hudson Soft
- Hudson Soft / Metro
- Humagade
- Human
- Human Club
- Human Entertaiment
- Human Entertainment
- Human Soft
- Hummer Team
- Hummingbird Soft
- Humongous Entertainment
- HuneX
- HyperBole Studios
- Hyperspace Cowgirls
- Hyperware
- Hypnotix
- Hypnotix, Inc