watch 01:31 The Loop (Games) Do you like this video? Location This page is a stub. E Acorn Plains [Edit] [Talk] Acorn Plains. Acorn Plains is a place in the first level in New Super Mario Bros. U. It introduces the Super Acorn powerup. Lemmy Koopa is the boss of this level. Retrieved from "https://nintendo.fandom.com/wiki/Acorn_Plains?oldid=524796" Categories: Location articles Pages needing a quote Class E articles Mario locations New Super Mario Bros. U Locations Community content is available under CC-BY-SA unless otherwise noted.