| Imagine Software Ltd | Publisher | |
| ImagineGames | Developer | |
| Imagined Reality | Developer | |
| Imagineer | DeveloperPublisher | |
| Imagineer (JP) | Publisher | |
| Imagineer Co., Ltd. | Publisher | |
| Imagineer JP | Publisher | |
| Imagineer and Genki | Publisher | |
| ImagineerJP | Publisher | |
| Imagineering | DeveloperPublisher | |
| Imagineering Inc. | Developer | |
| Imaginengine | Developer | |
| Imagineurfaves | Developer | |
| Imaginia | DeveloperPublisher | |
| Imagisoft | DeveloperPublisher | |
| Imagitec | DeveloperPublisher | |
| Imagitec Design | DeveloperPublisher | |
| Imagitec Design (Chris Wood, Stephen J. Crow, J. Dave Rogers) | Developer | |
| Imagitec Design (David Lyttle, Mick Hanrahan, Gavin Wade, Ben Daglish) | Developer | |
| Imagitec Design (Gavin Wade, Chris Edwards, Barry Leitch) | Developer | |
| Imagitec Design (Mick Hanrahan, Martin Hooley) | Developer | |
| Imagitec Design Limited | Developer | |
| ImakeMemeGames | Developer | |
| Imergy | Developer | |
| Imgn Pro | DeveloperPublisher | |
| Imgn.Pro | DeveloperPublisher | |
| Imira Entertainment | Developer | |
| Imitate Fire | Developer | |
| Immaculate | Developer | |
| Immaterial | Developer | |
| Immaterial Games | Developer | |
| Immersion Games | DeveloperPublisher | |
| Immersion Software | Developer | |
| Immersion Software & Graphics | Developer | |
| Immersive Games | Developer | |
| Immersive Pixels UG | Developer | |
| Immiboy | Developer | |
| Immortal Media Studios | Developer | |
| ImmortalLen | Developer | |
| Immortality Production | DeveloperPublisher | |
| Immy | Developer | |
| Imnotisabelamoner | Developer | |
| ImoutoWarfare | Developer | |
| Impact Games | Developer | |
| Impact Gameworks | DeveloperPublisher | |
| Impact Software (Chris Kerry, Mark Rogers, Steve Kerry, Barry Leitch) | Developer | |
| Impact Software Development | Developer | |
| ImpactGames | DeveloperPublisher | |
| Impbox Games | Developer | |
| Imperative Entertainment | Publisher | |