The journey of PS2 games on the PS4 is a fascinating story of secret tech, a stalled official program, and a dedicated community that eventually took matters into its own hands to keep the "Greatest Generation" of gaming alive. 1. The Secret Emulator (2015)
The modding community (homebrew scene) utilized this official emulator. By using tools like PS2 Classics GUI or Fake PKG Tools, users can take a standard PS2 ISO file, "wrap" it in the official emulator structure, sign it, and install it as a PKG file on a hacked PS4. juegos de ps2 para ps4 pkg
What are PKG files?