World 6-6 (New Super Mario Bros.)

World 6-6 is the sixth normal level of World 6 in New Super Mario Bros..

Layout
This level is the only one in the entire game that contains Chain Chomps. First, Mario must jump on the Spin Blocks, and fly through the air, avoiding the Chomps along the way. If Mario goes as high as he can on the platforms and goes left, the player should see a Chomp with a Star Coin on the post. After the Star Coin, Mario should continue left and slide down, leading to an area with another Star Coin with blocks covering the way to it. Mario must use the Spin Block, get above a stack of Blocks, and use the Drill Spin, which reveals a P-Block. Activating it will allow Mario access to the Star Coin, and a few bonus Coins. After the checkpoint, Mario should soon see a Red Coin Ring, which only works if the player slowly spins down to it. To get the final Star Coin, the player must first destroy any blocks that block the Spin Blocks. Then, with perfect timing, Mario must spin onto the Paratroopa directly below another P-Switch. After pressing it, Mario should hit the next Koopa he sees, and bounce of it, into a green pipe. Here, Mario can slide down and Wall-Jump to the Star Coin. In the final area, Mario should enter several green pipes, being blasted higher each time. Lastly, when the player reaches a set of four pipes, they should enter the third pipe, allowing Mario to reach the top of the Flagpole, earning him a 1-UP.

Star Coins

 * Star Coin 1: This coin is located slightly below the top-left corner of the level, and is obstructed by Brick Blocks. Mario should used the nearby Spin Block to drill through a set of blocks and hit a P-Switch, opening up the way to the coin.
 * Star Coin 2: Near the top-left of the level, sitting atop a Chain Chomp's post.
 * Star Coin 3: Shortly after midpoint, there will be a pipe that Mario can enter, but Brick Blocks block the path to it. Mario should ground-pound a column of Brick Blocks nearby, use the Spin Block, then glide to the right, bouncing off a Koopa Paratroopa to hit a P-Switch, then bounce off another Koopa to enter the pipe. Once inside the bonus room, Mario should use the Spin Block to glide up and then slide down the left pipe to obtain the Star Coin.

Enemies

 * Chain Chomps
 * Koopa Troopas
 * Koopa Paratroopas