PROBLEM TO BE SOLVED: To prevent a disadvantage from being applied to other participants by a plurality of participants who conspire with each other. SOLUTION: This internet game system is equipped with a communication circuit 100, a participant terminal 40, a participation desired person terminal 10 and a sponsor terminal 30 which are connected to the communication circuit between each other. The participation desired person terminal includes means by which at least three participants transmit the identification information of them and information to express the participation to the game to the sponsor terminal. The sponsor terminal includes a means which notifies that the plurality of participants belonging to one group comprising the participants for the game express the participation to the game, and collects the participation of other participants. The sponsor terminal also includes a means to judge whether the participation desired persons belong to the group or not using the identification information. In addition, the sponsor terminal includes a means to notify a permission notification which allows the participation desired person to participate the game or a non-permitted notification which does not allow the participation to the game, to the participation desired terminals.
展开▼
