New Super Mario Bros. Trick-Or-Treat is a Platforming game for the Nintendo 3DS by Wand Co.. It is being made to celebrate Halloween. Because of this, it features Halloween-like Power-Ups, scary worlds, new, creepy enemies, some guest appearances from the Dupmal Series, and the 3D feature causes things to pop out at you and scare you. Additionally, the Koopalings appear as bosses in Boo's Boss Blitz, but they've dressed up in different costumes that give them more powers.