World 3-3 (Super Mario Bros. 3)

World 3-3 is the third level in Water Land from Super Mario Bros. 3. It is accessible upon completing World 3-2, and its own completion unlocks 1.

Layout
The level starts in a somewhat large platform that moves up and down, with a Boss Bass chasing the player. Shortly after this, there is a Koopa Troopa and a line of Brick Blocks, with also some Hard Blocks and a Note Block that contains a power-up. One Brick Block also contains a P-Switch. Next are some gaps followed by a Rotary Lift, two more Brick Blocks containing a power-up and a P-Switch, and two Ice Blocks. After that, there are several coins which will serve as platforms if the player pressed the P-Switch. Otherwise, there are some Brick Blocks above them alongside another Rotary Lift. There will be jumping Cheep-Cheeps in the process. Afterwards there is a Warp Pipe which takes the player to the goal. However, if the player goes to the right, they will find a lone platform with a Brick Block containing a 1-Up Mushroom.

Enemies

 * Boss Bass
 * Cheep-Cheeps
 * Koopa Troopa

Level statistics

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