PROBLEM TO BE SOLVED: To provide performance means of a game machine that stores exposure means being longer than the horizontal length of a front cover, in the front cover and, in the performance, exposing the exposure means by moving it in an extension direction.SOLUTION: When executing no performance, a base end 162 of a nose part 160 and a body part 163 are hid in the back of a face cover 121. A tip end 161 is exposed from the face cover 121 and extends to the right. Accordingly, a player misunderstands that the nose part 160 moves in the horizontal direction just like a tentative nose part 260, and easily develops an illusion that a length L1 of a base end 262 and a body part 263 is equal to or less than a horizontal length L0 of the face cover 121. In the performance, the nose part 160 moves in an extension direction intersecting with the horizontal direction and exposes the tip end 161 and the body part 163. An extension-directional length L2 of the base end 162 and the body part 163 is longer than the horizontal length L0 of the face cover 121. Consequently, a performance device 100 can surprise the player with the nose part 160 that extends longer than the expected length.SELECTED DRAWING: Figure 9
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