A roulette game machine has a plurality of stations. The roulette game machine accepts a side bet operation carried out by players at the plurality of stations. The roulette game machine accumulatively adds one portion of the gaming values on which a side bet was placed, as a progressive payout. In case of granting a progressive payout, the roulette machine determines a station to which the progressive payout will be granted, from the stations at which the side bet operation has been carried out.