To provide a gaming machine and a control method therefor, having a new entertainment characteristics, a slot machine 10 of the present invention, when a “BONUS” symbol 250 associated with a pick-up bonus game is selected, receives selection of any one of twenty little pig's noses 210 displayed. Then, a benefit associated with the selected little pig's nose 210 is awarded. When the benefit to be awarded is a “stick house” 218 which means “step-up”, a step-up occurs to the stick house stage and the expectation value for a payout is raised. Thus, when one little pig's nose 210 is selected out of the twenty little pig's noses 210 displayed in the stick house stage, the payout amount of the benefit associated with the little pig's nose 210 is increased.