@LukeAlmighty Attack on Titan is a pretty normal world beyond that one kingdom, that did that one thing that one time.
After the events of the anime, there are hundreds of years of peace and prosperity (or at least it's implied).
Berserk... the world is engulfed in nightmare? I'm not a fan, not sure exactly what happens, but it really seems like demons are unleashed upon the world, and there's no respite for anyone.
Warhammer 40... the galaxy is engulfed in nightmare, very few live well in luxury worlds, statistically, the odds you end up there are close to none, and the other races don't live much better.
Also, when you die, your soul gets shredded in the warp, or eaten by demons.
Dark Souls... most of history is reasonably normal, with brief periods of the world falling to despair, and some regions becoming infested with undead, trying to reset the world.
I guess statistically, you're not likely to end up face to face with monstrosities, that being said you still live in a world with dark-ages level of technology, good luck dying of dysentery.
AoT it is!
Still better than the others IMO.