How did you download the game btw? I can't seem to figure it out.
Oh, I guess itch doesn't include a download link for free html games. I've uploaded the file here if you want to take a look.
you can add a downloable file (it just needs to be one extra file besides the HTML)
In Firefox you can right-click on the game, select 'This Frame', then click 'Save Frame As...'
