At the bottom of Super Mario World's winding rabbit-hole of secrets is Fall, which makes the world go crazy in a way not entirely unlike the glitchy 'minus' worlds of Super Mario Bros, but a little bit more coherent. In Fall, the colour palette of Dinosaur Island gets changed to look more autumnal, and many of the objects and enemies in the game get replaced (koopa troopas wear Mario masks, pokeys get sharp edges etc.) How to unlock it: Follow all the steps to unlock Special World (see previous heading), then complete its final level, 'Funky', to reskin every overworld level and add a bit of extra challenge to the game.