Playing DiD certainly adds tension to the game... I remember in good old Aces of the Deep, when I got rammed and then stuck in mud after repairing my boat on the bottom, I spent hours biting nails and attempting every maneuver possible to free the boat. I would never have the patience to do this if I had the option to just reload last save, but I would also never have the chance to feel like this in the end:
http://bluekidontheblock.files.wordp...0110659591.jpg