World 6-A (New Super Mario Bros. 2)

World 6-A is the first special course of World 6 in New Super Mario Bros. 2. This course is unlocked when getting to the secret exit in World 6-Ghost House.

Layout
The player starts on a platform next to a Lava Bubble. Mario will need to go down a red pipe with 5 more Lava Bubbles beneath. Underground, there are a lot of coins appear as Mario goes down. As soon as the player moves a short distance across, the lava begins to rise. During the course, the player will find loads of coins along with Dry Bones, Lava Bubbles and Super Dry Bones. These star coins are almost very easy to collect because of the lava rising. Near to the end, after the third star coin with 2 Super Dry Bones, There is a ? Block that contains a star inside until reaching a red pipe that leads to the exit and the flagpole.

Star Coins

 * Star Coin 1: The Star Coin is in plain sight in the air. The player must jump on the Dry Bones or off the platform just ahead of it to reach it.
 * Star Coin 2: Shortly after the first Star Coin, it's seen above a gap. It's already in the player's way, so they must simply jump to get it.
 * Star Coin 3: Raccoon Mario is required for this coin. Mario or Luigi must fly up to the platform that's up-left to the ladder-like platforms.

Enemies

 * Lava Bubbles
 * Dry Bones
 * Super Dry Bones