Abstract: A network game system is provided in which players can play a considerable number of matches without spending a long period of time, and in which it is difficult for teams that are long left on a server without being logged in to maintain high ranking. In the network game system, the server performs processing of playing matches of PC teams automatically. Client computers each include means for organizing a PC team, and means for entering the PC team organized to the server. The server includes: means for storing the PC teams entered into storage means; means for updating team costs of the respective PC teams entered; means for resetting the team costs into initial values; and means for deleting athlete characters expired of athlete life.