To utilize deposit media in respective shops in a game system using dispensing media such as medals.

The respective shops (2-1) are provided with the deposit machine (8) of the dispensing media, a dispenser (9) and a game machine (10-1-10-n) internet. The respective shops are connected to a center (1). A deposit value in the shop is converted to a value in common to the respective shops and managed in the center (1). The value in the center (1) is converted to the value of the dispensing media in the shop and utilization in the shop is made possible.