Newer Super Mario Bros. Wiki
3-Up Moon
Game(s) Newer Super Mario Bros. DS
Function Gives the player three extra lives

3-Up Moons are extremely rare powerups which only appear in Newer Super Mario Bros. DS. They give the player three extra lives. 3-Up Moons are only found in hidden areas in Bone Marrow Road, Slitherthorn Grotto and Bowser's Castle.