In short, I have no idea why this happens to you, I've never seen reports of anything like this. It looks like all the text strings inside the game have been scrambled, probably the downloaded js file is processed somehow locally on your computer (some special unicode treatment?). Brave is the usual suspect, so you may want to try another browser.
Thanks! I haven't heard of Brave being a problem before, but I'll go ahead and keep that in mind.
Oh yikes! I just turned Brave's shields of for this site, and it works perfectly.
Well, that's a surprising twist. It'll make Book Hunter much easier to play now. :-)
Thanks for your work on this (and all your other tools, too). Speaking of which, now I need to go try all your projects again (with the shields down) to see if I've missed anything.