While the phrase is a common search string, no modern official PC game with that exact title exists for free legal download. The original The Crystal Maze PC Game was released in 1993 and is now considered "abandonware" by gaming communities.
Here are the legitimate ways to experience The Crystal Maze in a gaming format:
: A version was released for iOS (iPhone/iPod Touch) in 2010, though its availability on current app stores varies by region.
: Developed by Digital Jellyfish Design, this game features the four classic zones (Aztec, Medieval, Futuristic, and Ocean) and the Crystal Dome. It is not officially sold anymore but can often be found on community-driven "abandonware" sites. To run it on modern Windows, you typically need an emulator like DOSBox .