PKG files are a type of file used to distribute PS3 games. They contain the game's data, including the executable, assets, and other necessary files. PKG files are typically used for digital distribution, allowing users to download and install games directly to their PS3 consoles.
Unlike ISO files, which are 1:1 disc images that act like physical discs, PKG files are installation packages similar to .exe or .zip files on a PC.
Shortly after, George Hotz (GeoHot) released the metldr keys. This effectively blew the door wide open.
There are several websites and online communities that offer free PS3 games in PKG format. Some popular sources include:
For a user, the decision comes down to risk tolerance and ethics: