The Oklahoma Board Game Community has a weekly meet-up here to play different games. Usually at least a dozen, up to 50 or more folks gather here to play different games. Card games, board games (Splendor, Catan, 7 Wonders, etc). The meet-up starts at 6 pm on Thursdays.
Oklahoma Board Games also on Meet-Up and Facebook. Update 06/01/2021 -- Game Night now at IHOP on 2nd St, same area.