To provide a technique of developing advantages to be received by a player.

A player plays a game on a Pachinko machine, with a password input thereto. A point is added at every variation during a password game. When an overflow prize is won while the number of stored starts reaches an upper limit value (the maximum value), a performance for displaying the number of COMBOs is performed (B). The number of COMBOs is incremented every time an overflow prize is won (C), (D). A point is added in accordance with the number of COMBOs attained during a variation, thereby developing advantages to be received by the player.