From StrategyWiki, the free strategy guide and walkthrough wiki

Contents 1 6-1: Let it snow! 2 6-2: About the only place that you ever hear Track #10 on the music player 3 6-3: Fort Freezy 4 6-4: Icicle Warning! 5 6-5: Squeak Squad Hideout 6 6-Xtra: Complete with Wheel course, annoying waterfalls, and a hidden door

[edit] 6-1: Let it snow!

[edit] 6-2: About the only place that you ever hear Track #10 on the music player

[edit] 6-3: Fort Freezy

[edit] 6-4: Icicle Warning!

[edit] 6-5: Squeak Squad Hideout

[edit] 6-Xtra: Complete with Wheel course, annoying waterfalls, and a hidden door