You may have installed a game update or DLC package rather than the actual base game PKG.
Package files originally used by Sony to distribute digital content through the PlayStation Network (PSN). This includes digital games, indie titles, DLCs, and game updates. Structure: A single compressed .pkg file. rpcs3 pkg games download
Patches that fix bugs or add performance improvements. You may have installed a game update or
Many digital games have their PKG links hosted on official Sony servers. Developers often use tools like pkg.py to download these files directly from Sony, which are then used in RPCS3. Essential Requirements for PKG Games rpcs3 pkg games download
