Jailbroken consoles can also run unofficial apps. These are often the smallest PKGs.
In the context of the PlayStation 4, a (Package) file is the standard format used by the console to store and install game data, updates, and applications. What are PS4 PKG Files? ps4 pkg list
: Data requirements ranging from a few hundred MBs to over 40 GBs. Jailbroken consoles can also run unofficial apps