The appeal of modern sub sims, at least for me anyway, is the thrill of the hunt. From the time you get that initial sonar contact to (hopefully) target destruction is a pretty cool feeling. I've played Jane's 688, Sub Command, and Dangerous Waters. I don't like playing with show truth turned on for those games. A lot of the action takes place on the submarine if you decide to turn auto crew off. If you get counter-detected and fired upon, the action intensifies in a hurry. There are so many different variables in modern warfare. You could be hunting in shallower water while unbeknownst to you a helo is tracking you. He may never get a good track on you or you may find a torpedo homing in on you. With WWII you only have to worry about destroyers and depth chargers. If you were smart enough you would have dived before any aircraft get to you.
