Users with jailbroken consoles use bloodborne.pkg to create local backups of their legally owned physical discs or digital copies, ensuring they can play the game without needing the disc.
Programs like the "BB Launcher" or specialized PKG extractors are used to unpack the data into a format the emulator can read.
If you're looking to run Bloodborne on PC using the file format, you're likely diving into the world of
: On standard retail consoles, these packages are encrypted and locked behind digital rights management (DRM) linked to a user's PlayStation Network account.