Crooked Cavern is the second level in the Acorn Plains area in New Super Luigi U.
The level features crystal floors that will rise and fall, similer to the platforms in Waddlewing Warning!, except, some of the platforms can crush you if you're under or on top of them. It also has lots of pipes, with Piranha planet that will sit on top, or pop in and out of the pipes and spit fire at you.
- Star Coin 1: Before going underground, go into the secret passageway near the left side of the left pipe to get the first Star Coin.
- Star Coin 2: Go to the second Koopa Troopa and jump on it. Kick it on the left side to clear off a path of Brick Blocks on the right and make a hole having the shell reach for the Star Coin.
- Star Coin 3: If you have the Flying Squirrel ability, ignore the first exit leading overground and glide by following the trail of the coins over the large gap. After landing, jump to the coin.
Once you collected the third Star Coin, ground pound the part of the floor left to it and revealing a hidden passageway leading to the yellow wrap pipe revealing the secret exit. The exit takes you to Acorn Plains-S:Cheep Chomp Chase.
Hidden Luigi image
Ground pound the steps made of brick blocks near the original flagpole revealing a standard Luigi from Super Mario Bros.