I download the zip, extract to it's own folder, then double-click the exe file. I get a popup with the following: "The version of this file is not compatible with the version of Windows you're running. Check your computer's system information to see whether you need an x86 (32-bit) or x64 (64-bit) version of the program, and then contact the software publisher." Don't know why, and there are other unity games I can play, but I also know this is an old lappy, so if could just be something weird on my end. (Least I can play sort the court, though.)