There is no official release of for the PlayStation 4 . While the game remains a fan favorite for its branching storylines and iconic multiplayer, it was never natively ported or remastered for the PS4 hardware.
In the context of PlayStation modding, a .pkg file is a package format used to install games and software on a jailbroken console. Call of Duty: Black Ops II call of duty black ops 2 ps4 pkg exclusive