This may be a problem with itch.io. Or you've just downloaded a link that takes you to downloads. Either way, there is no problem with the game. Try downloading again.
there is a free rar zip extractor called 7-zip that would make it easier for you to extract rar files faster instead of needed to have a free trail for winzip or any other zip file extractor. 7-zip is what I personally use and it works great, just right clip the file, select 7-zip then extract. Just letting ya know about this so you don't have to use your phone to extract it.