To provide a prize exchange system capable of changing prize balls to an optional matter desired by a game player.

The number of prize balls that is the counting result of game mediums acquired by the player is registered in an information storage medium 182 having a function as a financial card related to a prescribed account and owned by the player so as to be usable as the fund of the account. At this time, a prescribed number of points is further given according to various game conditions leading to the acquirement of the game mediums, and the total number of points accumulated every player is registered in the information storage medium 182 independently from the number of prize balls or in conformation thereto.