Ice Land

Ice Land a.k.a. Iced Land is the sixth world in Super Mario Bros. 3. It is the largest world in the game, bested only by Dark Land, with ten levels, three Hammer Bros., three Fortresses and two Toad Houses. As the name implies, it is a frozen wasteland filled with slippery floors and even some frozen lakes.

Lemmy Koopa rules the frozen tundra that is Ice Land.

Brief Level Info

 * 6-1: Snow-capped trees and wispy clouds serve as the backdrop to an arctic expedition.
 * 6-2: The thin mountain air would chill Mario to the bone if he weren't doing so much jumping!
 * 6-3: Seek insulation with a furry Tanooki Suit, because the thermometer just bottomed out.
 * Fortress: A roller coaster over bubbling lava and Roto-Discs put Mario on a collision course with Boom Boom.
 * 6-4: Rotating platforms, slippery ice, and mind-numbingly high ledges make for a dangerous stage.
 * 6-5: Clear a runway blocked by Buster Beetles, Koopa Troopas, and Ice Blocks to break a path to the exit.
 * 6-6: Brew some hot chocolate – after a frigid swim through an ice cave, Mario will need it!
 * 6-7: Frozen treats and terrors await a plumber who carries defrosting equipment.
 * Fortress: Sneak inside a Fortress of solid ice and avoid the sideways-moving Thwomps and sneaky Boos.
 * 6-8: Green pastures and aggressive undergrowth offer a change of scenery from the frozen tundra.
 * 6-9: Watch out for Munchers while completing a swim through a Piranha Plant pipe-infested underground lake.
 * 6-10: A cold snap has frozen the coins and Munchers. Use a Fire Flower to grab a powerful Hammer Suit.
 * Fortress: Forget the gym – Mario's bond to break a sweat as he fights along the converyor belts in this foreboding Fortress.
 * Airship: The villainous circus performer Lemmy Koopa schemes atop his airship. Give him an unforgettable performance.