PURPOSE: To improve the gaming property or gambling property of a golf putter game machine.

CONSTITUTION: When starting a ten-times golf putter game, random numbers are generated by a random number generating part built in a control circuit 92, two figures are selected out of those random numbers and defined as the numbers of a bonus game and in the turn of the bonus game, it is displayed on a bonus game display part 11e1. In the case of bonus game, the control circuit generates any random and decides a bonus point. When a putted ball gets in a cup, after being roulette-displayed, the decided bonus point is displayed on a bonus point display part 11e2. Then, the acquired bonus point is added to a score and displayed on a score display part 11d. When the ball gets in the cup in a normal game, one point is applied. By summing up these points, the victory of defeat of the game is competed.