World 1 (Super Mario Bros. 2)

World 1
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World 1^[1] is the first world Mario, Luigi, Princess Toadstool, and Toad venture through in Super Mario Bros. 2. It is divided into three levels and inhabited by Tweeters, Shyguys, Snifits, and Pidgits. At the ends of the first two levels, the heroes have to face the egg-spitting Pink Birdo, and Mouser at the end of the last level. These levels tend to have waterfalls with log bridges.

Level information

Level	Preview	Description
World 1-1		The first level of Super Mario Bros. 2. Enemies like Shyguys, Tweeters, and Ninjis appear. The level start off with the player falling from a Warp Door. Read more...
World 1-2		This level starts off with a Pidgit on a flying carpet that needs to be hijacked. This level introduces Pidgit, Beezos, Phanto, and Snifits. Read more...
World 1-3		This level start off in a grassy area. After entering the first door (not the one spawned by the Magical Potion), the player enters the castle. This level introduces Trouters, and Sparks. Mouser is the boss of this level. This level has a warp to World 4. Read more...

[Edit] Super Mario Bros. 2 / Super Mario Advance
Protagonists	Mario • Luigi • Toad • Princess Toadstool • Subcon
Bosses	Birdo • Mouser • Tryclyde • Robirdo^a • Fryguy • Clawgrip • Mask Gate • Wart
Items and objects	1-Up Mushroom • Ace Coin^a • Bomb • Brick wall • Cherry • Chain • Coin • Crystal Ball • Dream Machine • Egg • Elevator Platform^a • Flying carpet • Grass • Hidden Item Container^a • Jar • Key • Key Door • Magical Potion • Mushroom • Mushroom Block • POW • Rocket • Small heart • Soft sand • Spark Chaser^a • Starman • Stop Watch • Turtle Shell • Vegetable • Yoshi Egg^a
Subcon	World 1 • World 2 • World 3 • World 4 • World 5 • World 6 • World 7 • Subspace
8 bits	Albatoss • Autobomb • Beezo • Big Shy Guy^a • Big Ninji^a • Bob-Omb • Bouncing blade^a • Cobrat • Flurry • Hoopster • Ninji • Ostro • Panser • Phanto • Pidgit • Pokey • Porcupo • Shyguy • Small Fry Guy • Snifit • Spark • Trouter • Tweeter • Whale
Other	Bonus Chance • Gallery (Advance) • Glitches (Advance) • Life Meter • Mario Bros.^a • Media (Advance) • Pre-release and unused content (Advance) • Staff (Advance) • Yoshi Challenge^a
^a Only in Super Mario Advance