this is just a quick world idea i thought of, but why not have a cave-dwellers world where all you see above ground are some random doors that go straight down, but underground is where the world really is. and to get around, you take the element elevators. those are rock solid chambers that you step inside of and then a blast of water, lava, etc., pushes you through a tunnel, and then using magic, you stop yourself at a station. in the haven there are special weapons, like pickaxes, large hammers, the flat type, not the hammers we use in todays world, kinda like sledges.