These are almost always traps. Security researchers have analyzed fake PS3 PKG files and found:
On a jailbroken PS3, you can find homebrew emulators in .pkg format. Search for: zelda ocarina of time ps3 pkg link
Following the successful port of Super Mario 64 to PS3 (which runs natively at high quality), a native port for Ocarina of Time has been a high-demand project. These are almost always traps