Colorado

Denver

Denver Games
https://www.denvergames.com/

Denver Chess Club
https://www.denverchess.com/

Denver Boardgames Meetup
https://boardgames.meetup.com/24/events/4782447/

Georgia

Atlanta

Role Playing and Gaming Society
https://www.prism.gatech.edu/~dsadmwar/rpws.html

Atlanta Board and Card Playing Group
https://games.groups.yahoo.com/group/AtlantaBoardGames/?yguid=117487287

Atlanta Game Factory Game Nights
https://www.atlantagamer.com/

Atlanta Chess Center
https://www.atlantachessclub.com/

Emory Chess Association
https://www.emorychess.org/

Atlanta Backgammon Association
https://www.bginga.com/links.html