| 摘要 |
PROBLEM TO BE SOLVED: To provide a hall computer 100 for managing a card unit 20 allowing a player to change a game machine to another one using a recording medium (card with data about awarded game balls) for specifying the number of game balls awarded, in which influence of a game performed using awarded game balls after changing a game machine to another one, on sales is grasped.SOLUTION: When a hall computer receives information including the money amount of lent game balls used which is calculated in ball lending processing (S411), from a card unit (S412), the hall computer calculates the money amount of lent game balls used as cash sales, for every card unit (S413). When the hall computer receives information including the number of awarded game balls used which is calculated in awarded game ball returning processing (S431), from the card unit receiving a card with data about awarded game balls (S432), the hall computer calculates the money amount corresponding to the number of awarded game balls used, for every card unit (S433). The calculated cash sales and the calculated money amount corresponding to the amount of awarded game balls used, are output for every card unit. |
