In the PS3 ecosystem, a is a package file format used to install games, updates, or downloadable content (DLC) directly to the console's internal storage. A "patched" PKG refers to a modified installation file that has been pre-integrated with:
Corrections for "blurred" depth-of-field, improved textures for roads and trees, and high-definition cutscenes. gta iv pkg patched
Versions like 1.08 (the final official PS3 patch) which fixed critical multiplayer and stability issues. In the PS3 ecosystem, a is a package