Quarter

The Quarter is an item found in Ikard Air Terminal. Although ostensibly a unit of currency, Buster cannot change four quarters for dollars, or vice versa. They are used for playing arcade games and purchasing items from the gumball machines.

Quarters can be acquired by: If Buster spends his last quarter at the arcade, another arcadegoer will show him how to bump the game cabinet and get his quarter back. This enables infinite arcade games on one quarter, but the quarter will be lost if Buster spends it on the gumball machine.
 * Finding them on the ground or in the fountain.
 * Winning them in fights with enemies, like the Tasteless Rat or Lost Luggage.
 * Pay phones may have quarters in the coin return slot.
 * Bumping an arcade game.