I'm not in the game, but just a thought.. why not upload the .htm and .html files directly without zipping? Would make it a lot easier for players if they can just click on your link and it immediately opens in a new tab.
If those filetypes aren't allowed, you can ask an admin.. I don't know if they would mind or not, but it takes only one or two checkboxes for them in admin cp to enable it.
Alternatively, you could upload those files somewhere and provide a link directly to the html file, again easier than zipping/extracting/opening.
Just my 2 cents.
edit: good job on the game.. not my thing but impressive nonetheless.