PURPOSE: To provide a game machine for raising a sense of expectation of prize-winning, while giving unexpectedness and newness by a movement of a game ball.

CONSTITUTION: In the game machine in which an accessory is installed through a fitting base plate in a game area 2 provided in front of a game board 1, and also, a prize-winning part 4 is installed in the lower part of the accessory, an inflow port 51a of a game ball is provided on the fitting base plate 51. On the other hand, an outflow port 79 of the game ball which flows in from the inflow port 51a and is guided to the lower part by an auxiliary prize-winning flow passage provided on the back side of the game board 1 is provided in the upper part of the prize-winning part 4.