choose which Mario enemy to be: Koopa Troopa, a turtle that stands up with a shell on its back, small IQ, can knocks Mario back but defenseless in any other way, and can be insta-killed if shell is stomped of jumped on, crushed in shell, and shell can be used to be thrown at enemies and kill enemies. Goomba: A brown Mushroom with a mouth with sharp teeth on both ends, can be insta-killed if jumped on, crushed, and cannot be used to kill other enemies. And any other Mario Enemy.