Assist Blocks are golden blocks that appear in the Nintendo 3DS games Super Mario 3D Land, New Super Mario Bros. 2 and, on the Wii U, Super Mario 3D World. They appear near the beginning of the stage after losing a certain number of times in that stage. These blocks can be found in all levels except for all the the levels in World Crown. They can be stored when there is at least 2 players. This power-up makes the player indestructible (unless hit by lava, poisonous water or falling off the level) for the remaining of the level.