I
- I Can Do That! Games - Children's board and activity games
- Icon Miniatures (Harlequin Minis) - Miniatures
- Ideal Toy Company- Invented the Teddy Bear
- IFGS - Role-playing games
- Imagination Games - Board games and DVD games
- Imagine Role Playing - Role-playing games
- Imex Model Company - Miniatures
- Imperium Games - Role-playing games and miniatures
- Infinite Imagination - Board games
- Inner Circle - Role-playing accessories
- Inner City Game Design - Miniature games and board games
- InsideMind Entertainment - Card games
- Insurgency Gaming - Miniature, card and board games
- Integrated War Games - Miniature rules
- Interactive Imagination - Collector card games
- Interactivities Ink - Role-playing games
- Invisible City Productions - Card and board games
- Ionian Games Studio - Role-playing games
- Iron Crown Enterprises - Role-playing games
- Iron Sun Games - Board games
- Ironwind Metals - Miniatures
- Ironwood Omnimedia Company - Role-playing games
- ISA (publisher) - Role-playing games
- Issaries, Inc. - Role-playing games
- Italeri - Miniatures
- Inuvesco - Financial Planning Games
- Ivory Graphics - Playing Cards & Cards for Games
Read more about this topic: List Of Game Manufacturers