World 3-3 (Super Mario Bros. 2)

Level
World 3-3
Level code	World 3-3
World	World 3
Game	Super Mario Bros. 2
Boss	Mouser (original and Super Mario All-Stars versions) / Robirdo (Super Mario Advance)
Music track	"Ground BGM" "Underground BGM"
Level progression ← Previous World 3-2 Next → World 4-1 Super Mario Bros. 2 levels

World 3-3 (Chapter 3-3 in Yume Kōjō: Doki Doki Panic; titled Huh? or Attack Dungeon!!!) is the third level of World 3 in Super Mario Bros. 2.

Layout

The rematch with Mouser

World 3-3 starts in the underground with a door at the end leading outside. In the next area, there are a Shyguy riding an Ostro, Albatosses, Bob-Ombs, and another door. The next room has Ninjis and Sparks. The next door is located at the other side of the enemies. The next room is a tall room full of Sparks, and the player must scale to the top, where the next door is. The next room is another tall room, with Tweeters, Snifits, Shyguys, Pansers, and a Ninji, with the door at the bottom. The next room has Shyguys, along with the next door. The next door leads to the roof of the fortress full of Ninjis. The Crystal Ball is at the end. Located in the lair is the second Mouser battle (or Robirdo in Super Mario Advance).

This level is notable for containing the only red Snifit in the game.

Enemies

Sprite	Name	Count
	Albatoss with Bob-Omb	2
	Ostro and Red Shyguy	1
	Bob-Omb	1 (under Grass)
	Ninji	10
	Red Shyguy	(infinitely generated from Jars)
	Spark	28
	Phanto	1
	Pink Shyguy	1
	Pink Snifit	2
	Red Snifit	1
	Tweeter	2
	Red Panser	2
	Gray Snifit	1
	Mouser	1 (boss, NES/SNES only)
	Robirdo	1 (boss, GBA only)

Items

Sprite	Name	Count	Notes
	Mushroom	2	Only appear in Sub-space. The first one is on the tallest of the three stumps in the overworld section right after exiting the beginning cave. The second one is to the left of the top of the ladder in the first indoor section, directly above the locked door.
	Cherry	6
	POW block	4
	Turtle shell	2	Under grass.

The following items can be collected in Super Mario Advance only:

Sprite	Name	Count	Notes
	Mushroom	1	Only appears in Sub-space, in the area past the first locked door. The player must ascend to the top of the area's parallel ladders, where the Magical Potion and the Mushroom can be found on opposite sides.
	Ace Coins	5	The first coin is above the ledge before the door. The second coin is on the topmost point in the door right next to the locked door. The third coin is under the fourth platform and next to the third platform that make a zig-zag. The fourth coin is right above the door that leads outside. The last coin is up and to the right of Mask Gate.
	Yoshi Eggs	2	Only appear in Sub-space. The first egg takes the place of the first Mushroom. The second egg is on the platform with the Ninjis and Sparks. The Magical Potion is up the two ladders.

Level map

Gallery

• 

  Super Mario All-Stars

Names in other languages

Language	Name	Meaning	Notes
Chinese (Simplified)	关卡３‐３ Guānqiǎ 3-3 (Mandarin) Gwāankā 3-3 (Cantonese)	Level 3-3
German	Welt 3-3	World 3-3
Italian	Zona 9	Area 9
	Mondo 3-3	World 3-3	Super Mario Bros. Encyclopedia

Notes

• This is the only level in the Super Mario All-Stars version to play "Ground BGM" right before grabbing the Crystal Ball to enter the world's final boss.