Lineland

Lineland is World 1 of Super Paper Mario, and appears in World 1-1 as a classic grassy landscape with trees, hills, and holes in the ground. It's appearance drastically changes in World 1-2 as it then has desert features like sand, quicksand, and rocks. There is also a small town here. Then in World 1-3, the desert landscape changes a little bit as it now has ruins and a large carving at the end. World 1-4 is literally an old temple or dungeon that looks old and weathered down. The World 1 boss is Fracktail.