From the Super Mario Wiki, the Mario encyclopedia
A Paddle Platform (formerly known as a paddle wheel) is a round platform made up of four smaller platforms (similar to Flatbed Ferries) appearing in Super Mario World 2: Yoshi's Island, Yoshi's Island: Super Mario Advance 3, Yoshi's Island DS, New Super Mario Bros., New Super Mario Bros. Wii, New Super Mario Bros. 2 and New Super Mario Bros. U, Yoshi's New Island, and Yoshi's Woolly World. Some, particularly those of the New Super Mario Bros. games, strictly move left and right, while others travel along paths in the air like a Flatbed Ferry. Either way, the player must walk on it to make it start spinning. Paddle wheels may occasionally fall into another path.
Two platform wheels similar to paddle wheels appear in the Mario Party 9 minigame Pedal to the Paddle, except they are each made up of five wooden platforms. They also appeared in Mario Party 10 in Revolving Relay.
Super Mario World 2: Yoshi's Island / Yoshi's Island: Super Mario Advance 3
Paddle wheels make their debut in Super Mario World 2: Yoshi's Island and its remake; while big ones first appear in the levels Hop! Hop! Donut Lifts and then appear occasionally afterwards, small ones appear in Prince Froggy's Fort, More Monkey Madness, and Danger - Icy Conditions Ahead. They typically move on tracks, and while big paddle wheels are green in color, small ones are magenta in color.
Super Mario series
New Super Mario Bros.
New Super Mario Bros. Wii
New Super Mario Bros. 2
Paddle wheels return in New Super Mario Bros. 2, with multiple appearing throughout World Flower-2, as well as one appearing throughout the second half of the first level of the Impossible Pack. They behave the same as in past installments.
New Super Mario Bros. U / New Super Mario Bros. U Deluxe
Paddle Platforms return in New Super Mario Bros. U and its remake. Only two appear in the entire game, both in Fuzzy Clifftop: the first one appears just after the level's Checkpoint Flag, and the second one appears just before the level's Goal Pole. They behave the same as in past installments.
Names in other languages