I haven't...maybe it's the FPS and RPG elements. I'm not really sure. I put 20+ hours into the beta, and well, it was just a beta. I've never been part of a 'clan' before. I don't have any friends that play video games and I've never really even considered Co-Op until now. This game really seems to bring out the best in people. Dancing. I even found a soccer ball behind the steps in the tower and played with some people in the beta. That's pretty damn cool. What about this game pulls you in?