Use the Terminal command pkgutil --expand file.pkg output_folder to manually extract and view files.
On macOS, .pkg files are standard installers. While you can install them by double-clicking, a viewer allows you to see what the installer actually does before you run it. PKG Viewer
Ensures that a game, its DLC, and its updates all share the same Title ID to prevent installation errors. Use the Terminal command pkgutil --expand file
Often used to "remarry" game updates with a base game or to check if a backup is compatible with a specific jailbroken firmware. 2. macOS PKG Viewer PKG Viewer
This is crucial for security (checking for malicious scripts) or for manually installing individual components when an installer fails.