Three sets of Hammer Brothers traverse the map. Each of them have two rows of seven bricks and a floor made of ice. The first set will give up a Hammer when defeated, the second set will drop a Starman, and the third set will leave behind a Lakitu's Cloud. If the player meets the requirements for the Treasure Ship, a Hammer Brother will be replaced with that ship.
Ice Land as it appears in The Adventures of Super Mario Bros. 3.
In The Adventures of Super Mario Bros. 3, Ice Land, though never referred to as such, only appeared in the episode "Life's Ruff" (which is the only episode where this world is shown as the title card), where it had a different ruler named King Windbag. He bullied his servants and never said "please", but when Hip and Hop came, they stole his wand and turned him and Luigi into dogs and harassed them for a bit, but were eventually defeated and returned to Dark Land. The castle is depicted with igloos around it.
An icy tundra, referred to as "Ice Land", appears in the first episode of the Super Mario World television series, "Fire Sale". Here, it is under the control of Kootie Pie, who had stolen Mama Fireplant to make it warmer. However, Ice Land began to melt because of the heat, and Mario, Luigi, Princess Toadstool, and Yoshi arrived to save both Mama Fireplant and Ice Land.
An arrangement of Ice Land's map theme, "Slowly, Slowly", plays in Mario Party during the Pedal Power and Ghost Guess minigames. A more faithful arrangement plays whenever Mario receives anonymous e-mails in Paper Mario: The Thousand-Year Door. The map theme's melody is incorporated in Super Smash Bros. Ultimate into the "Fortress Boss - Super Mario Bros. 3" arrangement alongside the map theme for Dark Land and the titular Fortress Boss theme.
This is the only world of the game that is possible to go backwards from using a Whistle, as using it in the sixth world will allow one to return to the fifth. However, in Worlds 5 and 8, using it can cause one to return to the current world.