World 4 (New Super Mario Bros.)

World 4
Game	New Super Mario Bros.
Number of levels	10
World progression
← Previous; World 2	Next →; World 5; World 7 (Warp Cannon)
	New Super Mario Bros. worlds

“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.”

—Official website

World 4 is a world in New Super Mario Bros. It is mainly forest-based, and features poison, which instantly causes the player to lose a life a life upon contact. It has a total of twelve exits. This world is only accessible by defeating Mummipokey from World 2 in Mini Mario form. World 4 introduces Dorrie: a friendly creature who helps Mario travel along the toxic water. As with all the other worlds, Bowser Jr. is fought here in World 4-Tower. The boss of this world is a Mega Goomba, and defeating it will lead the player to World 5. If the player were to use World 4-Warp Cannon, unlocked via World 4-Ghost House's red-flag exit, then they would reach World 7.

The following enemies are introduced in World 4:

LevelsEdit

Image	Name	Description
	World 4-1	The first level in World 4. This level introduces poison, and the player must use Dorrie to cross it. Read more...
	World 4-2	This is the second level in the world. It is the only sky level in the world, and mostly takes place on Seesaw Shrooms. Read more...
	World 4-3	This is the third level in the world, and takes place underwater. It introduces Unagi and Mega Unagi. Read more...
	World 4- Tower	This is the fourth tower in the game. Lava is constantly rising upwards. Read more...
	World 4-A	This is the world's only secret level. It is covered in poison. Read more...
	World 4-4	This level contains many Wigglers. Read more...
	World 4- Ghost House	This level is the second Ghost House in the game. It contains the franchise's only appearance of Balloon Boos. Read more...
	World 4- Warp Cannon	This area can be unlocked by using the red-flag exit in World 4- Ghost House. If the player enters the Warp Cannon, they will be taken to World 7, which can be seen in the background.
	World 4-5	This level takes place underground. It contains many Bob-ombs. Read more...
	World 4-6	In this level, Mario must use Dorrie to cross poison again. Read more...
	World 4- Castle	This level is the fourth castle level in the game, and the last level in World 4. It contains many swinging platforms and Thwomps. Read more...

Click a level icon to open the relevant article.

[Edit] New Super Mario Bros.
Playable characters		Mario • Luigi
Forms		Mario (small) • Super Mario • Fire Mario • Invincible Mario • Mega Mario • Mini Mario • Shell Mario
Non-playable characters		Princess Peach • Toads • Toadsworth • Dorrie • Giant Wiggler
Other characters^a		Bob-omb Buddy • Bowser Statue (mechanical) • Fly Guy • Headless Snowman • Monty Mole • Wario • Yoshi
Enemies		Amp • Balloon Boo • Banzai Bill • Big Whomp • Blockhopper • Blooper • Blooper Nanny • Bob-omb • Boo • Boomerang Bro • Broozer • Bullet Bill • Buzzy Beetle • Chain Chomp • Cheep-Cheep • Cheep-Chomp • Climbing Koopa • Crowber • Deep-Cheep • Dry Bones • Fire Bro • Fire Snake • Flame Chomp • Goomba • Hammer Bro • Kab-omb • Koopa Paratroopa • Lakitu • Mega Cheep-Cheep • Mega Deep-Cheep • Mega Unagi • Mini Goomba • Moneybags • Paragoomba • Piranha Plant • Podoboo • Pokey • Scuttlebug • Skeeter • Sledge Bro • Snailicorn • Snow Spike • Spike Bass • Spike Top • Spiny • Spiny Egg • Splunkin • Squiggler • Super Dry Bones • Super Piranha Plant • Super Thwomp • Sushi • Swoop • Thwomp • Unagi • Venus Fire Trap • Whomp • Wiggler
Obstacles		Ball 'n' Chain • Banzai Bill Cannon • Bill Blaster • Bill Blaster Turret • Burner • Fire Bar • Giant Spiked Ball • Lava • Lava tide • Pit • Poison • Quicksand • Shifting wall • Skewer • Snow bank • Snowy Branch • Spike Ball • Spikes • Volcanic debris • Volcano • Water tide • Whirlpool
Bosses		Bowser Jr. • Bowser • Mummipokey • Cheepskipper • Mega Goomba • Petey Piranha • Monty Tank • Lakithunder • Dry Bowser • Bowser (large)
Items and power-ups		1-Up Mushroom • Big Star • Blue Coin • Blue Shell • Buzzy Shell • Coin • Fire Flower • Hidden Coin • Key • Koopa Shell • Mega Mushroom • Mini Mushroom • Red Coin • Springboard • Star Coin • Starman • Super Mushroom
Objects		! Switch • ? Block • ? Switch • Bell-shaped contraption • Brick • Bridge • Bubble-jet pipe • Cliff • Conveyor Belt • Cork • Crumbling ledge • Donut Block • Door • Dotted-Line Block • Drawbridge • Face block • Fence • Flag (midway point) • Flip panel • Floating barrel • Floating platform • Floor • Flying ? Block • Gelatin • Ghost-coaster • Gray Block • Green platform • Hanging vine • Haunted Stairs • Hinged device • Ice Block • Ice patch • Invisible Flying ? Block • Lift • Manhole • Moving ? Block • Moving Mushroom • Moving pole • Mushroom Platform • Mushroom Trampoline • Obstacle Bubble • One-way panel • P Switch • Paddle wheel • Phantom Hand • Pipe • Pole • Pole (goal) • Pole (secret goal) • Red block • Red Ring • Red-and-yellow block • Rippling Floor • Rolling log • Rope • Rotating platform • Roulette Block • Sand Dune • Scale Lift • Seesaw • Seesaw Shroom • Semisolid Platform • Shiny Block • Sinking and Rising Mushrooms • Skull switch • Small pipe • Snake platform • Spiked ? Block • Spin Block • Star^a • Stretch Shroom • Swing • Tilting mushroom • Tilting platform • Tornado • Vine
Worlds		World 1 • World 2 • World 3 • World 4 • World 5 • World 6 • World 7 • World 8
Moves		Crouch • Dash • Double Jump • Drill Spin • Ground Pound • Jump • Shell Toss • Slide • Spin Jump • Stomp • Swim • Triple Jump • Wall Jump
Gameplay elements		Castle • Challenge • Ghost House • Paah • Stored Item • Sub-area • Time Limit • Toad House • Tower • Warp Cannon
Minigames	Action	Balloon Racing • Danger, Bob-omb! Danger! • Lakitu Launch • Snowball Slalom • Snowball Slam^b • Vs. Lakitu Launch^b • Whack-a-Monty
	Puzzle	Coincentration • Hide and Boo Seek • Loves Me...?^b • Puzzle Panel • Wanted! • Which Wiggler?
	Table	Bob-omb Reverse^b • Luigi's Thrilling Cards^b • Luigi-Jack^b • Memory Match • Pair-a-Gone • Picture Poker • Speed^b
	Variety	Bob-omb Squad • Bounce and Trounce • Mario's Slides • Sort or 'Splode • Trampoline Time
	1-on-1^b	Bob-omb Sudden Death • Bob-omb Trampoline • Jumping Sudden Death • Jumping Brothers • Lakitu Launch • Vs. Mario's Slides • Vs. Pair-a-Gone • Vs. Trampoline Time
Music		"Course Clear" • "Fortress Theme" • "Main Theme" • "Mega Mario" • "Mizube BGM" • "Shiro BGM" • "Switch On!" • "Results"
Further info		1-Up Hunt! • Fire Mario no Ball Game • Gallery • Glitches • Luigi no Block Game • Mario no Coin Game • Multimedia • Pre-release and unused content • Quick Poll • Staff
^a Exclusive to minigames ^b Exclusive to Vs. Battle

[Edit] New Super Mario Bros. levels
World 1	World 1-1 • World 1-2 • World 1-3 • World 1- Tower • World 1-4 • World 1-5 • World 1-A • World 1- Castle
World 2	World 2-1 • World 2-2 • World 2-3 • World 2-A • World 2-4 • World 2- Tower • World 2-5 • World 2-6 • World 2- Castle
World 3	World 3-1 • World 3-A • World 3-2 • World 3- Tower • World 3-3 • World 3-B • World 3- Ghost House • World 3-C • World 3- Castle
World 4	World 4-1 • World 4-2 • World 4-3 • World 4- Tower • World 4-4 • World 4-A • World 4- Ghost House • World 4-5 • World 4-6 • World 4- Castle
World 5	World 5-1 • World 5-2 • World 5-A • World 5- Tower • World 5-3 • World 5-B • World 5- Ghost House • World 5-C • World 5-4 • World 5- Castle
World 6	World 6-1 • World 6-A • World 6-2 • World 6- Tower • World 6-3 • World 6-4 • World 6- Tower 2 • World 6-5 • World 6-B • World 6-6 • World 6- Castle
World 7	World 7-1 • World 7- Ghost House • World 7-2 • World 7-3 • World 7- Tower • World 7-4 • World 7-5 • World 7-6 • World 7-A • World 7-7 • World 7- Castle
World 8	World 8-1 • World 8-2 • World 8- Tower • World 8-3 • World 8-4 • World 8- Castle • World 8-5 • World 8-6 • World 8-7 • World 8-8 • World 8- Tower 2 • World 8- Bowser's Castle