World D-2

World D-2 is the second level of World D in Super Mario Bros.: The Lost Levels and the eighteenth secret level overall in said game.

Layout
The player starts at the bottom of a flight of stairs, at the top of which is a Red Koopa Troopa the player can kick to defeat some enemies below. After a group of Koopa Paratroopas are some hanging pipes with Piranha Plants the player must avoid as they jump between small platforms. Next is a stack of Bill Blasters with Koopa Troopas falling above it. In the second-from-the-right Brick Block of the top row of Brick Blocks ahead is a Beanstalk that will take the player to Coin Heaven, which will drop the player at the end onto a platform with a Warp Pipe leading to an underground area with a power-up and some Coins, before looping around to just before the Brick Blocks. After a Springboard to help the player reach a high block over a pool of water is the Goal Pole.

Level statistics

 * Power-ups: 1 (Super Mushroom or Fire Flower)
 * 1-Up Mushrooms: 0
 * Secret areas: 2