The most critical fact to establish is that
The short answer is no; Forza Horizon 3 was not officially released for the PS3. The game was developed exclusively for Xbox One and Windows, and there was no announcement from Microsoft or Sony regarding a PS3 release.
However, if you're specifically interested in Forza Horizon 3, you might consider checking it out on Xbox or Windows platforms.
If you want to play Forza Horizon 3 legitimately, it is available on the following platforms through backward compatibility or original hardware: The original release console. Xbox Series X|S: Playable via backward compatibility. Windows 10/11 PC: Available through the Microsoft Store. Current Availability Status Why Forza Horizon 3 is still the BEST!
: PKG files are a format used for PlayStation games and updates, essentially package files that contain game data. A repack typically refers to a re-packaged version of a game that has been compressed or restructured for easier distribution. However, these are usually community-made and not officially supported by the game developers or Sony.
: While community-made repacks or ports might be discussed in some circles, they are not officially supported and can pose risks.