Eventually Mario, Luigi, and Daisy end up in the alternate dimension, ready to save the day by fighting the evil King Koopa. But this new world isn’t a wild, creative, miraculous place like you’d find in the Mario games. Groaningly dubbed Dinohatten, it’s actually a lot like a regular city on Earth, only, um, crappy and dystopian. It’s dirty, polluted, tyrannical, and filled with crime. And covered in “fungus.” Apparently the writers took the name Mushroom Kingdom a bit literally, and decided that Dinohatten should be covered in fungus, which looks kind of like torn-up bedsheets made out of earwax. To make matters stranger, we eventually learn that the city-covering fungus is actually the mutated form of the kingdom’s former ruler.