I realize that not a lot of people still hang around here but thought maybe I could get a discussion going anyway. This might have been brought up before in this site's long history, but if so I'm unaware of it.
I think that unlike most games, Myth seems to capture a sense of what war would be like. Rather than the cheesy, over the top American-macho type of war that many games portray, Myth has a great way of capturing the desperation and futility of the human beings on the ground. To me this gives it a lot of its emotional depth. And in a weird sense, though Myth is set in a fantasy world, it has a more realistic view of war, while all the games set in World War II, a realistic setting, have a fantastic and ridiculous view of war.