| 摘要 |
PROBLEM TO BE SOLVED: To prevent an interest in a game from declining.SOLUTION: A management server issues a password including an upgrade information on the basis of information set by a manager. When a password input by a player includes information to upgrade a performance version, a slot machine upgrades the performance version from the current version by one level. Also, the slot machine automatically upgrades the version on the basis of date data acquired by an RTC even if no password for upgrading is input so long as the period elapsed from a time limit for upgrading to the current version is three months or more. |
