A computer system (a ranking server) provides a ranking service to players of a computer-controlled game. The server accepts an entry procedure from a mobile terminal or a personal computer. Then, the server classifies players who made entries into groups according to players' levels which is decided...http://www.google.de/patents/US20030093168?utm_source=gb-gplus-sharePatent US20030093168 - System and method for providing game ranking service
