A .pkg file in this context is a specialized archive used by the Scene format. Unlike a standard .zip or .rar file, you can’t simply right-click and "Extract Here" using Windows Explorer. These archives bundle together: Image files (PNG, JPG) and sprite sheets.
with open(f"output_dir/file_i:04d.bin", 'wb') as out: out.write(data) Scene.pkg Unpacker