This game is the best real life simulation  combat game I've played (well not 100% realistic but it's as close as it gets, i guess). Actually it's the best game I've played, period. I tried Rainbow 6 once but didn't like  it: too complex and took too much time to plan and set up a mission. This  one is awesome: missions are already planned and all you have to do (if you  want) is just plunge in the action. On the other hand if you like you can  reject the default plan and come up with your own. Moving around is soooo  much easier than with rainbow 6: you can move crouched and peek around  corners and these are both great enhancements. I use them a lot and saved  my posterior in more than one risky occasion. And of course there's  "terrorist hunt": you can replay a mission with thirty baddies  around and no hostages: it's the ultimate shootout-hunting match. It's  worth every penny it costs!  GOOD JOB GUYS!