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

Layout[]

It is a jungle-themed world with toxic purple water seeping through the ground. 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.

Levels[]

Name Image Description
World 4-1 4-1 NSMB A jungle level that introduces purple Poisoned Water, Scuttlebugs, and Dorrie.
World 4-2 4-2 NSMB A sky level that features purple Mushroom Platforms that tilt left to right depending on which side Mario or Luigi stand on.
World 4-3 250px-NSMB MegaUnagi An auto-scrolling underwater level that prominently features Cheep Cheeps and Unagis.
World 4-Fortress NSMB NSMB 4-Tower A tower level that features Fences and rising lava. This is the first tower level in the game where Bowser Jr. cannot be defeated by normal jumps, and can only be hit by Koopa Shells or Fireballs.
World 4-4 World 4-4 NSMB A dense jungle level that features Wigglers, in addition to standard enemies like Goombas and Koopa Troopas.
World 4-A 4-A NSMB Another dense jungle level with more purple poisoned water, and prominently features vines and Paddle Platforms.
World 4-Haunted House NSMB 4-GH NSMB The second Ghost House in the game. It contains the only appearance of Balloon Boos and platforms that transport Mario or Luigi to other sections of the level. Like with all other Ghost Houses, there is a secret exit that requires the use of a Mini Mushroom, and getting it will unlock a Warp Cannon to skip to World 7.
World 4-Cannon NSMBWarp Cannon NSMB 4-Cannon Unlocked by finding the secret exit of the Ghost House. It warps the player to World 7. The skies of said world are seen in the background.
World 4-5 4-5 NSMB An underground level that prominently features Bob-ombs, Mushroom Platforms, and mechanical yellow platforms which open up and close.
World 4-6 4-6 NSMB A dense jungle level with more purple poisoned water. It is the second and last level to feature Dorrie.
World 4-Castle NSMB World4CastleNSMB A castle level that features lava, seesaws, Dry Bones, and Thwomps. The boss is a Mega Goomba. Completing the castle grants Mario or Luigi access to World 5.

Secret Exits & Unlockables[]

Secret Exits[]

Unlockables[]

Enemies introduced[]

Sprite Enemy name Level debut
ScuttleBug
Scuttlebugs World 4-1
NSMB Mega Unagi
Mega Unagis World 4-3
UnagimodelNSMB
Unagis World 4-3
Wiggler NSMB sprite
Wigglers World 4-4
Balloon Boo NSMB render
Balloon Boos World 4-Haunted House NSMBGhost House
Bob-omb NSMB
Bob-ombs World 4-5
Thwomp NSMB in-game model
Thwomps World 4-Castle NSMBCastle
Super Thwomp NSMB
Super Thwomps World 3-Castle NSMBCastle
Mega Goomba NSMB sprite
Mega Goomba (boss) World 4-Castle NSMBCastle

Trivia[]

  • If the player looks closely on the world map, when Mario walks on the secret path from World 4-1 to the green Toad House, he appears to walk backwards on one of the sections.

Walkthrough[]

See also[]

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