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World 4-
Game Another Super Mario Bros. Wii
Level number 4- (4-)
Time 500
World World 4
Level type Airship
Enemies Bob-ombs
Mechakoopas
Boss Bowser Jr.
Game Progression
Previous level (4-) World 4-
Next level (5-1) World 5-1

World 4- (or World 4-) is the airship and the ninth and final level of World 4 in Another Super Mario Bros. Wii. Bowser Jr. is fought at its end.

World 4- is unlocked by completing World 4-. Completing it will unlock World 5-1 in World 5.