A plurality of game machines installed in a single hall are collectively controlled. Based on information of coin or credit consumption in a certain game machine on which a player is performing a game, this player's cumulative consumption of coin or credit is judged. As the result of this judgment, when...http://www.google.se/patents/US8192273?utm_source=gb-gplus-sharePatent US8192273 - Game server, game control method, and game machine
