Group
- 19 & One : HMGS-Great Lakes3
- 19 & One Gaming Club17
- 19 & One Gaming Club of Indianapolis11
- 19 & One HMGSGL22
- 19 & One and Boardroom Games6
- 19 & One and The Game Preserve1
- 19 & One and The Last Square3
- 19 & One and The Miniature Building Authority3
- 19 & One/ HMGS-Great Lakes1
- 19 & One/ HMGSGL5
- 19 & one /HMGS_Great Lakes8
- 19761
- 19831
- 19851
- 1A Games1
- 1First Games120
- 2 Flights Up1
- 23rd Century Production, LLC.15
- 23rd Century Productions, LLC84
- 25th Century Games52