World 4-2 (Super Mario Bros. 2)

World 4-2 is the second level of World 4 in Super Mario Bros. 2.

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World 4-2 is the only level in the game that has Whales in it. The level starts underground, and has a vine that the player needs to climb to the first main part of the level. The player then needs to slide, duck, and jump along the ice while dodging a flock of Beezos. After going through a doorway, the next section has the whales in it. The water coming through the blowholes can hurt the player if the player hits it from the sides, but the player can stand on top of it. On the left, pick up a potion, cross over to the dream world, and pick up the first mushroom.

This level also has a hidden warp to World 6. After the player enters the area with the whales, look for a magic potion. Carry it forward until there is a vase. Enter the vase after crossing over to the dream world, and the player will warp to World 6, which is the desert.

And if you choose not to warp to the sixth world, pick up a rocket that takes you to the next area, take the red Shy Guy off the Autobomb and throw him to the ground. Pick up a potion and carry it while landing on a red Shy Guy that walks on spikes. Cross over to the dream world to pick up the second and final mushroom before encountering Birdo.