"A question that’s often on my mind is, “if piracy is so prevalent, what games are the most pirated? And if they’re so freely available what games do people usually swing towards?” I dug a little deeper to find that strangely, they’re not really affected by the sales charts.
We checked out the most popular Torrent site, isoHUNT.com, according to eBiz MBA, to see what are the most popular torrented games have been over the past 6 months. It’s impossible to get the most accurate results, but these should give us a pretty accurate idea of what the most popular pirated games are. And there are some surprising entries." - GameState