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World 4-
Game Newer Super Mario Bros. DS
Area number 4-
Time 300
World Pumpkin Boneyard
Area type Warp Cannon
Game Progression
Previous level (4-) The House of Doors (secret)
Next level (8-1) Boomblast Badlands

World 4- is the Warp Cannon of Pumpkin Boneyard in Newer Super Mario Bros. DS.

World 4- is unlocked by completing the secret exit of The House of Doors. Completing it will unlock Boomblast Badlands in Koopa Country.