Even with a zip file and the page configured to be HTML it still doesn't work, I changed it so that at least the would be available to download, also it wouldn't let me have 2 zip files with one set to download and 1 set to HTML so I had to upload a second file with the rar set to download.
I've just turned the HTML one back on back on and all I get it an empty area on the page where the game should be.