To correctly manage a prize winning ball and to attain sound management by forming an inclining surface by which a return ball flows into a ball gutter in the frame body lower part of a pachinko machine having a supply ball counter and arranging a return ball counter in the passage of the return ball gutter.

The lower part 1a of the frame body 1a in the pachinko machine is adopted as the inclining surface 1b by which the return ball flows toward the ball gutter 2 and the return ball counter 3 is arranged in the vertical part 2a of the return ball gutter 2. By the configuration, the return ball such as an out ball or a fallen is rolled on the inclining surface 1b of the lower part 1a in the frame body 1, is made to fall down to the return ball gutter 2 and is counted by the counter 3 which is disposed in a middle part. Then, the number of supply balls and the number of the return balls in the respective pachinko machine 1 are correctly counted and the difference is managed as the prize winning balls. Therefore, the working states of the respective machines are correctly grasped and unsound management that the prize winning balls are summed-up by a smaller number than the actual prize winning balls is prevented.