Template:Worldbox Frosted Glacier is the snowy fourth world of New Super Mario Bros. U, 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 that takes 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, 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.

Levels

Level Number Level Name Preview Description
Frosted Glacier-1 Spinning-Star Sky File:Snow Star lands NSMBU.jpg A snowy level that includes giant stars that spin when the player steps on it.
Frosted Glacier-2 Cooligan Fields   A frosty level that introduces Cooligans.
Frosted Glacier-File:Fort Icon.png Freezing-Rain Tower File:FeezingTower.jpg The Tower of Frosted Glacier. Boom-Boom is the boss of the Tower.
Frosted Glacier-3 Prickly Goombas! File:PricklyGoombas!.jpg A frosty level that introduces Prickly Goombas.
Frosted Glacier-4 Scaling the Mountainside File:Snow Mountain NSMBU.jpg A snowy level that includes Weight-Platforms and Bullet Bills.
Frosted Glacier-5 Icicle Caverns File:World4-5StarCoin1.jpg A icy cave level with falling icicles.
Frosted Glacier- Ghost House Swaying Ghost House File:World4-HStarCoin1.jpg A ghost house that constantly moves.
Frosted Glacier- Castle Wendy's Shifting Castle File:NSMBU4PlyBoostMode.jpg A castle with moving girders and Thwomps.
Frosted Glacier-Fliprus Fliprus Lake File:World4-AStarCoin2P1.jpg A secret course introducing Flipruses.

Challenge Mode Original Courses

Boost Rush Courses

Names in Other Languages

Template:Foreignname Template:BoxTop