Here is the long-form article optimized around your keyword (while debunking it for user safety).
PKG files, on the other hand, are a type of file used for installing games and other content on the PS3. These files contain the game's data, which is extracted and installed on the console using a tool like MultiMan or PS3PKG.
If you find websites claiming to offer a download or "repack," these are typically:
Which of those would you like?