Peek-a-Boo Ghost House

Peek-a-Boo Ghost House, or Frosted Glacier-Ghost, is the ghost house course of Frosted Glacier in New Super Luigi U. It is unlocked by completing Ice Slide Expressway, and its own completion will unlock Wendy's Thwomp Castle.

Layout
The level starts in a ghost house with a platform that turns into coins when stood upon and some moving platforms and Boo Circles. Soon after, a Big Boo starts chasing the player across some moving platforms. Eventually, a door appears which leads to the Goal Pole.

Secret Exit
When the player collects Star Coin 2, they need to reach a nearby secret door which leads to the Goal Pole. The secret exit opens up Fliprus Floes.

Star Coins

 * Star Coin 1: Near the secret Goal Pole.
 * Star Coin 2: The Star Coin is located on a platform above the moving platforms, with a wall jump needed to collect it.
 * Star Coin 3: The last Star Coin is found inside a Boo Circle.

Enemies

 * Circling Boo Buddies
 * Boos
 * Big Boos

Trivia

 * This is the only Ghost House level in the game that doesn't take place after the Tower level of the same world. It takes place before the Castle level.