| 摘要 |
PROBLEM TO BE SOLVED: To impart a variation in the ball discharging rate in response to the game status and the throwing-in quantity of a game medium. SOLUTION: This slot machine can select a casting count for the game medium for playing a game from among a plurality of predetermined casting counts. In the slot machine, a role object lottery means 61 performs a lottery for role objects including SB (single bonus) during a normal game, and controls the slot machine in such a manner that a SB game may be executed when the SB is won or the game medium has entered the SB. During the SB game, the role object lottery means 61 performs a lottery for role objects including an RT shifting role object, and controls the slot machine in such a manner that an RT game may be executed in the next game and after when the RT shifting role object is won or the game medium has entered the RT shifting role object during the SB game. In a role object lottery table 62 which is used under the normal game, a probability for winning the SB is set to be higher as the casting count of the game medium becomes larger. In a role object lottery table 62 which is used under the SB game, a probability for winning the RT shifting role object is set to be higher as the casting count of the game medium becomes smaller. COPYRIGHT: (C)2006,JPO&NCIPI
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