To provide a game machine configured such that even when a movable body that can slidably move has a gravity center positioned deviated from a position overlapping with a sliding mechanism, smooth sliding movement is allowed, and the sliding mechanism is unlikely to be damaged.

In the game machine 10, the sliding mechanism 120 for slidably moving the movable body 110, includes: a base unit 130 having two elongated guide portions 131 and 135 disposed so that their longitudinal directions X are parallel to each other at deviated positions; a sliding unit 140 having two sliding portions 141 and 145 locking to the two guiding portions and integrally slidable in the longitudinal direction of the two guide portions; and a driving source 150 for sliding the sliding unit relative to the base unit. The gravity center J of the movable body is positioned on the outside of longitudinal extending lines L1 and L2 of the two guide portions, and the gravity center of the movable body and the two guide portions are disposed so that a triangular shape formed by connecting the gravity center and the two sliding portions has two vertices of two sliding portions, and the two vertices have interior angles of less than 90 degrees.