| 摘要 |
PROBLEM TO BE SOLVED: To increase player's interest in a jackpot by frequently generating an opportunity to acquire an item to be the condition of a jackpot lottery without making a game device popular or unpopular by the acquisition number of the items to be the condition of the jackpot lottery. SOLUTION: The game device includes a means for executing a lottery game, a means for generating two or more kinds of items, a means for reducing the acquisition number of the other kind of the item when one kind of the item is generated, a means for displaying the acquisition number for each kind of the item, and a means for executing the jackpot lottery corresponding to the kind of the item when the acquisition number for each kind of the item reaches a predetermined condition. COPYRIGHT: (C)2011,JPO&INPIT |
