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World 4
Game Another Super Mario Bros. Wii
World number 4
Levels 9
Bosses Wendy O. Koopa
Bowser Jr.
Game Progression
Previous world (3) World 3
Next world (5) World 5
(6) World 6 (secret)

World 4 is the fourth world in Another Super Mario Bros. Wii.

Its tower and castle bosses are Wendy O. Koopa and its airship boss is Bowser Jr..


Level number Preview Description
World 4-1 World 4-1A.png
World 4-2 World 4-2A.png
World 4-3 World 4-3A.png
World 4-Fortress.png World 4-TowerA.png
World 4-4 World 4-4A.png
World 4-Gohst.png File:World 4-GhostA.png
World 4-5 World 4-5A.png
World 4-Castlensmbw2.png World 4-CastleA.png
World 4-Airship2.png World 4-AirshipA.png

Other Buildings

Level number Preview Description
World 4-Cannon2.png World 4-CannonA.png The Warp Cannon of World 4 which leads to World 6. It is accessible after completing the secret exit of World 4-Fortress.png.