Once you have a PKG file, you'll need software to install it on your PS4. This often involves a computer and a USB drive, as well as specific software to transfer and install the package on your console.

PKG files are essentially game packages used by the PlayStation 4 and other PlayStation consoles. These files contain the game data, including the game itself, patches, and other relevant information, all packaged into a single file for easy distribution and installation. PKG files are typically used for digital distribution through the PlayStation Store, but they can also be created and shared by users for various purposes.