World 5-2 is the second level of World 5 in Super Mario Bros.
The player starts at the bottom of a small flight of stairs, which has a Bill Blaster at the top. After which is a Koopa Troopa and a Springboard, followed by two rows of Brick Blocks with the top-right-most block containing a power-up. Next is a Koopa Paratroopa followed by a Hammer Bro. on a small flight of stairs. Afterward is a Warp Pipe with a Piranha Plant, which leads to an underwater area with Bloopers, Cheep Cheeps, and sinking lifts that push the player downward. After the initial Warp Pipe is a broken set of stairs with two Goombas walking down it, followed by a formation of blocks and a Hammer Bro. By finding a Hidden Block to the right of the row of ? Blocks, the player can reach a beanstalk in the left-most Brick Block above that leads to Coin Heaven. After the blocks and a gap is a Koopa Paratroopa and a Bill Blaster, then the Warp Pipe the player exits the underwater area through, and two rows of Brick Blocks with Hammer Bros. on them; the Hammer Bros. do appear if the player went through the underwater area, however. In the right-most block of the top row of Brick Blocks is a Super Star, and after a gap and a stone pillar is where the player drops down from Coin Heaven if they took that route. After a line of Buzzy Beetles, there are two low blocks containing a Coin Block on the left and a power-up on the right; if the player is in Super or Fire form, they need to crouch and slide to collect the contents. After some platforms are some Goombas and Koopa Paratroopas, and a single Brick Block containing a power-up. Next is a pipe with a Piranha Plant and a Koopa Paratroopa jumping down the broken up stairs before the Goal Pole.