To remarkably increase excitement and enjoyment in a game machine including a variable display device that has a display part capable of displaying identification information.

A game board 8 of a Pachinko machine 1 includes an operation pocket 11 and a jackpot pocket 12, and a special symbol display device 20 having a display part 20B is built in the center part of the game board 8. A display part 20A includes a main display part 20a and a sub-display part 20b, and a plurality of symbol arrays K1-K3 and the like comprising multiple kinds of symbols are displayed on the main display part 20a in addition to a background image. The special symbol display device 20 is provided with a separate means capable of visually deriving predetermined presentation separately from the main display part 20a only when predetermined conditions are fulfilled, which makes a player feel interested.