Group
- The Op - Usaopoly9
- The Polyhedral Knights4
- The Puzzalarium1
- The Scabby Rooster LARP Tavern4
- The Tower Games Club1
- The Upper Deck Company18
- The WitchBorn10
- The Wrecking Crew1
- Things Get Dicey2
- Thread Raiders2
- Thunderworks Games8
- TimeLine Ltd.1
- Timewarp Labs5
- Travelers Trail Online PFS3
- Triple Rainbow Games12
- US Games2
- USC Games1
- Ukiyo-pop1
- Ultra PRO13
- UniGames1