In a base game, when a combination of symbols, that would be a winning combination of all “BAR”s if a remaining symbol of the combination of the symbols were the “BAR”, has come to a stop on a payline L and the symbol “BAR” neighbors the symbol other than the “BAR” (=the remaining symbol) on the payline, same payout as that when the winning combination of all “BAR”s comes to a stop on the payline L is provided.