It is required to improve the sliding of the game ball. The game machine 10 of the present invention is a game machine using a plurality of game balls in a circulating manner by itself, and includes a roller member 71 for attaching a coating agent to the game balls, wherein the coating agent is colored. The roller member 71 is attached or impregnated with a coating agent, and includes a roller component 75 that abuts on the game ball. The roller component 71 has a color capable of identifying the coating agent. Fig. 14

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