To provide a game island base capable of preventing a failure caused when the storage amount of Pachinko balls becomes excessive and facilitating Pachinko ball feed work into the game island base, in the game island base including a counter installed corresponding to each game machine for counting the Pachinko balls acquired by a player and sending them to a recovery route.

The Pachinko balls exceeding a predetermined storage amount are separately stored in a ball separation part 93 from an overflow path 90, and the Pachinko balls stored inside the ball separation part 93 are withdrawn from a withdrawing port 97. In the meantime, the Pachinko balls withdrawn from the withdrawing port 97 are fed from a feeding port 103 provided on a position near the ball separation part 93. Thus, even in the configuration of a completely independent type Pachinko island base adopting a carry-less system, the failure caused when the storage amount of the Pachinko balls becomes excessive is prevented, and the Pachinko ball feed work into the game island base is facilitated.