Frosted Glacier

Frosted Glacier is the snowy fourth world of New Super Mario Bros. U, New Super Luigi U, and New Super Mario Bros. U Deluxe, lying northeast of Layer Cake Desert, Sparkling Waters, and Acorn Plains, north of Soda Jungle, northwest of Rock-Candy Mines and Meringue Clouds, and west of Peach's Castle. Frosted Glacier is a cold and snowy world with pine trees and indigo mountains similar to World 5 from New Super Mario Bros., only to take place during a constellation-filled night. It's one of two of the worlds that the player can choose from after beating Morton in Morton's Compactor Castle (Morton's Lava-Block Castle in New Super Luigi U), the other being Sparkling Waters. Because of this, it is quite possible to play through the game without ever reaching Frosted Glacier. There are 9 levels in this world, five of them are the regular levels, two are the Tower and Castle levels, one Ghost House, and one secret level. The name is derived from frosting, or a reference to the original meaning, which is to be covered and coated in frost. The boss of this world is Wendy O. Koopa. The Bubble Baby Yoshi makes their appearance on the map. There are Cooligan Enemy Courses.

Challenge Mode original courses

 * Bullet Bill 1-Up Bounce - 1-Up Rally
 * Fliprus Crossing - Time Attack
 * Ghost House Coin Curse - Coin Collection
 * Icicle Skating - Time Attack
 * Penguin Bowling - 1-Up Rally (Original Course)
 * Prickly Goomba's Coinless Run - Coin Collection
 * Slick Slopes and Bullet Bills - Time Attack
 * Icicle Falls - Boost Mode Challenges
 * Thwomp Castle Cash Flow - Boost Mode Challenges

Boost Rush courses

 * Spinning Star Sky – Flying Squirrel Pack
 * Wendy's Shifting Castle – Acrobat Pack
 * Fliprus Lake – Penguin Pack
 * Cooligan Fields – Penguin Pack

New Super Mario Bros. U

 * Munchers
 * Cooligans
 * Prickly Goombas
 * Bullet Bills
 * Bill Blasters
 * Banzai Bills
 * Banzai Bill Cannons
 * Ice Bros.
 * Big Boos
 * Flipruses
 * River Piranha Plants
 * Thwomps
 * Big Thwomps
 * Thwimps
 * Boss: Wendy O. Koopa

New Super Luigi U

 * Broozers
 * Ice Piranha Plants
 * Cooligans
 * Bony Beetles
 * Prickly Goombas
 * Banzai Bill Cannons
 * Buzzy Beetles
 * Boos
 * Big Boos
 * Flipruses
 * Thwomps
 * Big Thwomps
 * Boss: Wendy O. Koopa

Monopoly Gamer
Frosted Glacier is the seventh property on the game board in Monopoly Gamer. It is one of two properties in the Orange Color Set (along with Cooligan Fields).

Super Mario Party
The setting of the minigame Tall Order from Super Mario Party heavily resembles Frosted Glacier due to the tall fir trees and starry night sky seen in the background.

Super Mario Maker 2
Frosted Glacier appears in Super Mario Maker 2 as the snow theme in the New Super Mario Bros. U style. Unlike in the original game, it is set in the day as well as at night. The night theme uses a new background instead of the default background from said game.

Trivia

 * Like in New Super Mario Bros. Wii, the music for the snow overworld levels is a winter-themed arrangement of the regular overworld theme in the game.
 *  can be seen in the background of the overworld and some stages.
 * Frosted Glacier appears in the premade world in the Super Mario Mash-up in Minecraft. It appears to use elements from New Super Mario Bros. Wii, such as snow-covered mountains from that game, and an ice ring similar to the one where Ice Bros are fought.

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