Hey, Caranthral! I'm sorry to hear about this issue, thank you for providing the screenshot. Is this Windows or HTML? Are you using Linux or trying to play it on a mobile device?
Are you extracting the files from the zip as well, or are you running it from inside the zip? Running the index file while it's still inside the zip will result in the images not showing.
I haven’t tried since yesterday but I might've tried opening them without unzipping the file, though I also tried to unzip it afterwards and couldn’t get it to work with 7zip. (Though knowing me, I most likely didn’t do it the correct way)
When I open the zip file this i what it shows, and when I click on the Index chrome HTML it opens up in the browser but no images show.