| 摘要 |
When a base game is executed, symbols arranged on a plurality of defined regions in a matrix state which includes three rows and five columns. When a symbol "JOKER" is statically displayed on a certain defined region in the base game, a game mode is shifted from the base game to a bonus game. When the bonus game is executed, symbols are variably and then statically displayed on a defined region group which includes the certain defined region and defined regions adjacent to the certain defined region.
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