Usually, groups of friends or acquaintances who enjoyed playing rummy together would form these guilds. They would get together frequently to play and hangsatta king how to play out at prearranged spots, like local clubs or members' houses. Membership in a guild is typically exclusive and requires invitations from or approval from current members. Guilds frequently developed their own customs and rules. Rummy guilds became more formal in their structures as they grew in popularity.