To provide technique allowing expansion of a width of playability without largely harming fairness of a game.
When winning is performed from a normal state, a game state is transferred to a "state A" after a big win game end, and the number 15 of times of time shortening is awarded. When winning is performed within the number 15 of times of the time shortening, the game state is transferred to a "state B" after the big win game end, and the number 100 of times of the time shortening is awarded. When the game state is transferred to the "state B" once, the "state B" is looped by continuous winning, so that the loop of the number 100 of times of the time shortening can be generated. When having transferred to a "state C" or a "state D", it is necessary to transfer to the "state B" after returning to the "state A" once, so that it makes a detour, but the width of the playability is expanded in the sense of a rechallenge to the "state A".
SUGIURA HIROMASA
UTSUNOMIYA AKIRA
IBA HIROYUKI
SHIBATA KOJI
OI SHIGEAKI
MATSUSHITA SHINSUKE
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