To provide a winning device of a game machine having a simple constitution and changing a chance of winning.

This winning device of the game machine provided with a game board having at least two winning holes, and has a guide wing mechanism disposed above one of the winning holes and guiding game balls to the lower part, receiving holes selectively positioned in front of the both winning holes, and a positioning mechanism positioning the receiving holes. The winning holes may be longitudinal openings enlarged in the moving direction of the receiving holes. The guide wing mechanism may include a pair of guide wings capable of swinging for approaching to/separating from each other.