To enhance the amusement by eliminating the monotonousness in the operation in a game machine.

When an RT (replay time) winning combination is won in a winning combination lottery, the time of operation of a stop button to be operated at the last of the game is measured by a time measuring part. Each stop button has a proximity sensor. When the proximity sensor detects that a finger of the player approaches the last stop button, the time of operation of the stop button is started. The measurement of the time of operation is terminated when the stop button is pressed down to a pressing position to stop the rotation of reels. When the RT winning combination is established, the upper limit number of game rounds in the RT mode is determined based on the measured time of operation. The RT mode is terminated when the upper limit number of game rounds are consumed.

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