Limited Lift

Limited Lifts (also referred to generically as rafts and lifts ) are a type of lift found in the New Super Mario Bros. sub-series.

New Super Mario Bros. Wii
A Limited Lift first appears in New Super Mario Bros. Wii, where it moves once the player steps on it. It features numbers on its side that start from zero and go up to five, representing the number of enemies and objects onboard the raft at once (besides the players). The Limited Lift stops when at least five enemies and objects board it, and the player must clear out at least one enemy or object on the raft to get it moving again. It appears only in World 5-4, where it is the main gimmick of the level.

New Super Mario Bros. U / New Super Luigi U / New Super Mario Bros. U Deluxe
Limited Lifts return in New Super Mario Bros. U and New Super Luigi U, exhibiting the same behavior as in New Super Mario Bros. Wii, albeit with the numbers now counting down instead of up. One appears each in Magma-River Cruise in the former and in Magmaw River Cruise in the latter, though Limited Lifts are also given prominent roles in the challenges Mole to Goal and Mole to Goal Returns with the counts reduced to two in both cases.

Limited Lifts reprise the aforementioned roles in New Super Mario Bros. U Deluxe.