I noticed as I got really far into an asteroid world the terrain would actually start to change and would become more earth-like. This made me think that playing the ice world and lava worlds would do the same thing it's just harder to get to that point. I got to that point in the ice world but it's still an ice world. my people can conduct activity like normal outside but the world is still covered in ice and snowy and dark. I want to try the lava world but I don't want to waste my time if the train never turns to normal just like the asteroid does.