BatMUD is an active medieval fantasy MUD with a large playerbase, established in 1990. BatMUD is Finland-based and operated and owned by an organisation, Balanced Alternative Techniques ry ry ("B.A.T. ry"), a non-profit organization, officially registered 1994 in Helsinki, Finland.. By 2006, over 100,000 players had frequented the game, making it one of the largest text-based multiplayer games on the Internet. In the beginning of 2008, it had over 30,000 subscriptions.