I never played Halo or Halo 2 because I didn't have an Xbox. So I will admit that I didn't get caught up in the craze, so that might be part of it. But, I played Halo 3 and I think the gameplay is just really lame compared to the CoD games. Maybe it just comes down to realism? I dunno, I just wasn't feeling it. It was fun with a group of people, but it can't hold my attention alone.