To provide an attachment structure of a performance display device in a game machine, which permits rearrangement to change specifications to be made inexpensively and in a short time by making the change of a lamp panel unnecessary for the change of the size of the liquid crystal assembly and the top side assembly of the performance display device and permits comparatively powerful performances as compared with conventional game machines.

A top cover 4 storing a liquid crystal assembly including a front liquid crystal panel 7 is projected to a player side from a front design panel 8 to overlap the upper portion of the front design panel 8. The top side assemblies 5 and 6 can be mounted from the front side and projected toward the player side from the front design panel 8. This structure makes a change in the shape of the lamp panel unnecessary and can realize more powerful performances of the liquid crystal display device.

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