A disk image file that you must mount or burn to access the game installer.

Based on standard release structures, once extracted, the folder usually contains:

This is a split RAR archive . To access the contents, you must have all subsequent parts (e.g., part2.rar , part3.rar ) in the same folder before extracting. Typical Contents & Usage

Right-click and select "Extract Here" using a tool like WinRAR or 7-Zip .