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World 4-3 is a level found in the game New Super Mario Bros.


250px-NSMB MegaUnagi.png

This level is an autoscrolling underwater level, and introduces Unagis and Mega Unagis. The level is also filled with Cheep Cheeps and Warp Pipes, most of which will blow out air.

Item count

Image Item name Count
NSMB Super Mushroom.png
Super Mushroom 3
NSMB Fire Flower.png
Fire Flower 3
NSMB 1-up.png
1-Up Mushroom 2


Image Enemy name Count
Goomba NSMB sprite.png
Goomba 1
NSMBDS Cheep Cheep Sprite.png
Cheep Cheep 21
Unagi 13
Mega Unagi 5


Star Coins

  • Star Coin 1: After the first Mega Unagi passes, the player should swim to the right and drop down and left to go under a rock formation where they can get the coin. If the player is not fast enough, Mario will be crushed between the scrolling screen and rock.
  • Star Coin 2: The second Star Coin is located at the bottom of the level between two rock formations, where it is guarded by two Unagi.
  • Star Coin 3: After hitting the ? Switch, the player should enter the lower right green pipe to be transported to an area with two Unagi and a red pipe spewing bubbles. The player should immediately swim over the left of the cave, go down past the Unagi and use the bubbles to collect the final Star Coin.