GAME MACHINE INSTALLATION ISLAND BASE

PROBLEM TO BE SOLVED: To provide a game machine installation island base capable of easily changing the installation height of game machines according to a type of a game machine to be installed in replacement work of the game machines, especially replacement work between Pachinko game machines and reel type game machines.SOLUTION: When a Pachinko slot machine is installed on an island base, upper locking pins 72a and 72b and lower locking pins 82a and 82b of an upper unit 30 and a lower unit 60 are locked in locking grooves 90a and 90c and locking grooves 91c and 91d of a support 3a. When the Pachinko slot machine is replaced by a Pachinko machine on the island base, the upper locking pins 72a and 72b and the lower locking pins 82a and 82b are once disengaged from the locking grooves 90a and 90c and the locking grooves 91c and 91d, and locked to the locking grooves 90b and 90d and the locking grooves 91a and 91b so as to change the heights of the upper unit 30 and the lower unit 60 to heights fitted to the Pachinko machine on the island base.