The entire concept of a video game is unrealistic. If you want to "train" thousands of archers while you sleep with a click of a button, play a game. If you want to shoot "plasma rifles" at aliens, play a game. If you want to establish a civilization and guide it over 6000 years, play a game. If you want realism, get up and go to work in an office and then come home everyday to an ungrateful family and drink for hours in front of the TV in a futile attempt to numb the ever increasing misery that is your pathetic life.