Hey there, when you download it make sure you download it to your windows (or the other operating system) and then find the file in your PC, it should be a ZIP file. then drag it to your desktop and then you should be able to play! Lmnk if this helps! :D
I saw this from the multiple live videos and decided to get it, good game for a 1.20 I would highly suggest more things to do in the game, overall 8/10!