To reduce a capital investment cost related to the management of saved balls borne by game parlors.

When dispensing balls at a dispensing rate 1 (1 yen for a ball) and a dispensing rate 2 (4 yen for a ball) associated with respective membership card IDs, this saved ball management device 50 stores "total amounts of saved balls" as the total deposit amounts of Pachinko balls at respective dispensing rates, when receiving a request to update "the total amount of saved balls" from a spacer unit 20, a counting machine 30 or a prize management device 40, converts the number of update request balls into an amount (an update request amount) equivalent thereto based on the dispensing rate of the game media acquired from an apparatus of a requester requesting the update, and updates the converted amount in regard to "the total amount of saved balls", so that "the number of balls" having different values among a plurality of dispensing rates are unitarily managed by an integral unit, "amount (yen)".