To provide a ball tray of a ball counter for a game machine so as to eliminate troubles, such as outward drop of Pachinko balls, by covering a gap caused between the ball tray and the game machine due to external dimensions of the game machine, installation conditions of a ball dispenser, or the like.

The ball tray 2, which forms a part of the ball counter for the game machine receiving Pachinko balls discharged to the lower tray of the game machine 20 and collecting the balls while counting the number and which is arranged below the lower tray of the game machine 20 and on the front side of the game machine 20 for receiving the Pachinko balls from the lower tray, has a gap-covering member 4 covering the gap between the ball tray 2 and the game machine 20 and being capable of moving forward and rearward.