To provide a game machine with a mechanical interlocking mechanism which interlocks with the entrance of a ball into a special winning hole for easily opening a plurality of variable winning devices so that game balls can easily enter the variable winning devices and which is formed so that the variable winning devices can not be fraudulently opened easily with the external force.

A game board includes: the plurality of variable winning devices; at least one special winning part; a ball pathway for letting game balls entering the special winning part flow down; and the interlocking mechanism operated to open at least two variable winning devices so that game balls can easily enter the variable winning devices. The interlocking mechanism comprises: a shaft part disposed in parallel to the backside of the game board and rotatable around a horizontal axis; and a ball abutting part disposed in the shaft part to abut on game balls flowing down through the ball pathway and integrally rotate with the shaft part to be rotated from the initial position to the position of opening the variable winning devices while abutting on the game balls in the ball pathway.