The PSOne classic Call of Duty has been removed from the European PlayStation Store, “as it was never supposed to be available for purchase,” according to MusterBuster on the European PlayStation Forum. Currently, only gamers who have purchased Modern Warfare 2 can download Call of Duty, using the voucher code found in the game case.
It is expected the title will be available for purchase in the near future, but for now it is exclusive to owners of Modern Warfare 2.