PURPOSE: To provide the prize winning device of a pachinko game machine having two passages for guiding flying balls to the inside of a flying ball accumulation chamber, and having the capability of selecting a passage for giving game variation.

CONSTITUTION: A flying ball guide passage 14 is provided in a flying ball accumulation chamber 1 having a rotary vane piece 4 at both sides of an opening. Furthermore, the first drop hole to be opened and closed with an open/close board 17 is formed at the intermediate section of the passage 14, and the second drop hole 16 is formed at a position deeper than the first drop hole. An accumulator 28 for storing flying balls is provided immediately below the second drop hole. The balls are caused to drop through the second drop hole via the open/ close operation of the board 17, while the balls coming down through the first drop hole are received with the bottom plate of the chamber and directly guided to a plurality of winning holes 55a, and 55b. The balls from the second drop hole are stored in the accumulator 28 and delivered at once toward the winning holes 55a and 55b, after the predetermined time of storage.