Because it is abandonware (a game no longer sold or supported by the copyright holder), the "free download exclusive" often refers to preservation sites. However, caution is required.
For games that are no longer officially supported or sold by the developer, sites like MyAbandonware provide a safer community-vetted environment for downloading "orphan" software, though you should always check the legal status in your region first. What Makes SuperMax Stand Out? prison tycoon 4 supermax free download exclusive