i have purchased this and nothing happened its not downloaded the game page says 0mb download size whats happened is this site for direct download or do i need an emulator??

The site has been experiencing technical difficulties the past two days with either games not being available or providing the wrong installer. I don't have this particular game so I don't know if this one had that issue.

I would try again and see if you can download it. If you don't already have it, I would recommend the GOG downloader. http://www.gog.com/downloader

EDIT: The technical difficulties I previously mentioned seem to have been cleared up.