Because these are unofficial packages, downloading PKG files from untrusted sources carries risks of console bricks or malware on your PC. Never download files that require you to fill out surveys or bypass password walls. If a mod causes your PS3 to overheat or freeze constantly on the character selection screen, delete the game utility data via the XMB menu and rebuild your PS3 database via Recovery Mode.

To find a high-quality community PKG, look for versions that incorporate these elements:

First, let's clear up what we're discussing. A PKG file on the PS3 is essentially a package file used for digital distribution. It’s the file format for all digital content you would normally download from the PlayStation Store, including full games, DLC, and game updates.