"Archives" refers to repositories where game files (ROMs) are stored. Due to legal pressure from Sony, major public archives are frequently taken down or relocated.
Some PSN .pkg files require a license file ( .rap ) to run. ps3 pkg roms archive
In the PlayStation 3 ecosystem, a (Package File) is the standard installation format for digital content. Unlike folder-based backups (JB Folders), PKG files are the official Sony format used for: "Archives" refers to repositories where game files (ROMs)