| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a prize exchange system capable of easily performing a prize exchange with a high degree of freedom without needing cumbersome processing.SOLUTION: A player counts the number of owned balls acquired in a game, acquires a prize receipt, and, based on the prize receipt, can perform a provisional settlement related to a prize exchange. On condition that the provisional settlement is performed legitimately, a provisional settlement certificate is issued. Based on the provisional settlement certificate, the player can perform a prize exchange for a predetermined period of time from the provisional settlement, not limited to the day when the prize receipt is issued. In particular, if there are multiple provisional settlement certificates, a prize exchange can be performed with the multiple provisional settlement certificates aggregated.</p> |
