To get the game running, you can't just open "Part 01." You need to treat the collection as a single unit:
FitGirl repacks are highly compressed. It is recommended to check the box that says "Limit RAM to 2GB" if you have 8GB of RAM or less to prevent your PC from freezing during installation.
If you are looking at a file named , you are likely dealing with a "split archive" of the popular home renovation game, House Flipper .