If I'm reading this correctly, your index.html is in the same folder as the assets (named gamefinal), yet you give the relative path to the pictures as e.g. "gamefinal/stars.jpg". It should be just "stars.jpg".
Thank you!!! That worked. Now to fix all the images.
Oops, I forgot to say you could more easily move index.html out of the gamefinal folder. You can still put them in an archive together just fine..
