so like basically when sombody from the light world (earth) uses smthn sharp ro stab the ground that makes a dark fountain which makes a dark world; a dark world basically takes the shape of the room it was made in, so like a sock on the ground would be a species of enemies and a carpet would be a forest maybe and like, if theres 3 dark fountains in the world, that just kinda.... ends the world. and then like, the only way for a lightner (person from light world) to escape a dark world is by like, using determination to seal the fountain, so like, saving the world kinda.... and if a dark fountain is sealed, that dark world is destroyed, and if a dark world has mutiple fountains i guess it doesnt get destroyed. which is why you can spare enemies: to brung them to castle town which is kinda like, the original dark world.