| 摘要 |
PROBLEM TO BE SOLVED: To sum up machine migration data in a game system comprising a card unit 20 for enabling machine migration using a recording medium (owned ball presence card) by which the number of own balls can be identified and a hall computer 100 capable of communicating with the card unit.SOLUTION: A hall computer, when receiving discharge information from a card unit having discharged an owned ball presence card (S212), sums up the number of times of discharge as machine migration data (S215); when receiving acceptance information from a card unit having accepted the owned ball presence card (S222), determines that machine migration has been performed (S225) and sums up the number of migration cards as machine migration data (S226); and outputs information by which a ratio of the number of migration cards to the summed-up number of times of discharge can be identified.SELECTED DRAWING: Figure 15 |
