I downloaded it this morning, just for the sake of it (my game version is uncensored already, since I bought it somewhere else than Steam), works like a charm. I didn't see a single add pop up.
Zippyshare had a legal problems and is locked in quite a few countries (including mine).
All I had to do was to get a VPN connection to a country where it isn't blocked and click download.
I do have script, popup and add blocker plugins installed, so maybe I don't see everything the site does. But from my past experienced I remember that Zippy never spamed my screen with adds and stuff.
If you really don't get to download the file, then use a download manager like JDownloader. Maybe also Firefox' DownThemAll plugin can handle Zippy, give it a try.