To enhance attraction by a method wherein a tower display means is operated according to the tempo of a music to be performed, while when a sound data of a preselected part data exists, a color chip is displayed to compete in the game based on the results of the evaluation of an operating timing of a color switch.

An operation switch 50 of a game machine 10 is provided with a color switch 70 for a plurality of colors and a game controller 140 is provided with a data memory means 141 to store a performance data comprising a plurality of part data. One of the plurality of part data stored is handled by the operation of the operation switch 50 to select it by a part select means 143 so that the performance data is reproduced through a speaker 30 by a performance means 144. A display 20 is lit to make a display according to the tempo of a music to be performed by a tower display means 145. When the color switch 70 is operated to match the display of a color chip corresponding to a sound data of the part data, an operation timing thereof is evaluated.