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"World 4 is a lush forested landscape teeming with life. Unfortunately, most of the forest inhabitants are far from friendly. Before you make it through the forest, you'll have to navigate your way through the mind-bending World 4 Ghost House."
New Super Mario Bros.'s Official Site

World 4 is the fourth world in the game New Super Mario Bros.. It is a jungle-themed world with toxic purple water seeping through the ground. This world is only unlockable if Mummipokey, the boss of World 2 is defeated while Mario or Luigi are in mini form. Defeating the boss of this world allows Mario to progress to the snowy World 5. The world is largely inhabited by Koopa Troopas and Goombas, with Scuttlebugs dropping down from the boughs of the trees. As aforementioned, a large swamp of toxic purple water flows through the world. If Mario or Luigi were to touch the water, they would die instantly.

The boss of this world is Mega Goomba that can be defeated either by using elevators to reach its head or by using 27 fireballs.


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World 4-1 is a normal jungle level featuring many Scuttlebugs. This level also introduces Dorrie. This level has a secret exit.

In order to unlock this level, you must unlock World 4 by completing World 2-Castle's secret exit. Unlocks World 4-2 upon completing the normal exit. Unlocks World 4-Tower and a 1-UP Mushroom House upon completing the secret exit. You may buy a Power-up Mushroom House upon completing the normal exit.

This level features three enemies:

4-2 NSMB.png

World 4-2 is a sky-themed level featuring a lot of tilting purple Mushroom Platforms.

In order to unlock this level, you must complete World 4-1's normal exit. Unlocks World 4-3 upon completion.

This level features three enemies:

World 4-Tower. Unlocks World World 4-4 upon completion.

World 4-Cannon

Secret Exits & Unlockables

Secret Exits


Enemies introduced



New Super Mario Bros. (DS) 100% Walkthrough - World 4 (All Star Coins & Secret Exits)

by packattack04082