Safe alternatives
: Fully compatible with Xbox One and Xbox Series X|S via the official backward compatibility program.
However, this pursuit is often born of misinformation. A standard PS4, even one that has been modified to install package files, cannot play a PS3 .pkg . The code architecture is incompatible. The only legitimate way to play PS3 games on a PS4 is via PlayStation Now (now part of the Premium tier of PlayStation Plus), a cloud-streaming service. Fight Night Champion has occasionally been available on this service, allowing users to stream the PS3 version to their PS4. However, users looking for a "PKG link" are usually seeking a local installation to avoid streaming latency or subscription fees, unaware that a direct local install of a PS3 game on a PS4 is technically impossible without complex, unstable emulation that most retail consoles cannot handle.
Risks of unofficial PKG files
Rumors point to: