In Sony’s ecosystem, a PKG (Package) file is the standard installation format for digital content—PSN games, updates, DLC, and even system firmware. When you download a game from the PlayStation Store, you are downloading a PKG. For jailbroken consoles, PKGs allow users to install backup games directly onto the internal hard drive (HDD) without needing a physical Blu-ray disc.
: These files are typically installed via a USB drive (formatted to FAT32) using the Package Manager or a homebrew tool like Multiman . Game Size : A digital PKG for CoD4 is approximately 5.20 GB . Call Of Duty 4 Modern Warfare Pkg 3.55 Ps3