World 3 (Super Mario Bros. 2)

World 3 is the third world of Super Mario Bros. 2. Like World 1, it is a Grass Land. The original world boss was Mouser, but in Super Mario Advance, he was replaced by Robirdo.

World 3-1
World 3-1 starts in a small room, where the only obstacle is a waterfall. Across the waterfall is the door. In the next room, the player has to jump on clouds, heading to the top of the waterfall. Once making it to the top, the player has to ride a Pidgit's carpet to the sky, and onto a beanstalk, which the player must climb to get to the next area. Waiting at the top are Shy Guys and Pansers; while the door awaits at the far right. When entering the door, Red Birdo waits for the player. Defeating Red Birdo means the player can continue to World 3-2. The player can also take a shortcut in this level. After the player climbs the beanstalk, they can alternately go left to the edge and Super Jump across the gap. At the other side, there is a door leading to Birdo's lair. This gets the player to Birdo a little faster.

Also, at the bottom of the waterfall is a door that leads to a cave. Here, the player can access a hidden warp to World 5.

World 3-2
World 3-2 starts in a wide room, with Beezos, a Panser, two Snifits and Bob-ombs. The player must use the bombs to blow up a block in the ground, leading the player to a ladder. Down the ladder is the underground, where Shy Guys and Tweeters are at, alongside many bombs. The player must use these bombs through obstacles, and then enter through a door, which leads to Red Birdo. When defeating Red Birdo, the player can now go to World 3-3.

World 3-3
World 3-3 starts in the underground, with no obstacles, and a door is at the end. In the next room, there are Shy Guys, Albatosses, and bombs; and a door is at the end. When entering this door, the player is inside, where Ninjis and Sparks await, while the next door is located at the other side of the enemies. In the next room; when the player enters the door; a tall room awaits, full of Sparks, and the player must scale to the top, where the next door awaits. When entering this door, the player is in another tall room, with Tweeters, Snifits, Shy Guys, Pansers, and a Ninji awaiting, with the door at the bottom. Shy Guys await in the next room, along with the next door. Located in the next door, leading to the last room, full of Ninjis, and at the end, is the crystal ball. Located in the lair is the boss, Mouser (Robirdo in Super Mario Advance, which the player must toss back giant eggs), which the player must throw bombs at him to win. When Mouser is defeated, a door appears. World 3 has been completed.

This level is notable for containing the only red Snifit in the game. Despite all Snifits being depicted as red in official art, the only one in the game is in a room in this level, standing on a ledge.

World 3-1

 * The first coin is right above the point where the player comes out of the door on the hill.
 * The second coin is down the waterfall on the left side of the screen.
 * The third coin is on the right side of the screen when the player first gets the magic carpet.
 * The fourth coin is on the left side of the screen, close to the vine.
 * The last coin is located inside the door after Luigi or Princess Toadstool jump to the left of the screen near the Giant Shy Guy.

World 3-2

 * The first coin is right before the Green Panser.
 * The second coin is above the giant POW Block.
 * The third coin is above the 2 blocks that can be exploded by a bomb.
 * The fourth coin is right above the giant gap.
 * The last coin is right above the blue Shy Guy in the room with all the gaps.

World 3-3

 * 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.

World 3-1

 * The first egg is next to the vase that leads the player to World 5.
 * The second egg is on the cloud above the hill in the sky.

World 3-2

 * The first egg is right where the third ace coin is, but in Subspace.
 * The second egg is in the left most pit with the Porcupos.

World 3-3

 * The first egg is on the tallest post.
 * The second egg is on the platform with the Ninjis and Sparks. The magic potion is up the two ladders.

List of enemies in World 3

 * World 3-1
 * Shy Guy
 * Pidgit
 * Panser
 * Red Birdo


 * World 3-2
 * Beezo
 * Panser
 * Snifit
 * Bob-omb
 * Shy Guy
 * Tweeter
 * Ostro
 * Red Birdo


 * World 3-3
 * Shy Guy
 * Albatoss
 * Bob-omb
 * Ninji
 * Spark
 * Panser
 * Tweeter
 * Snifit
 * Ostro
 * Red Birdo
 * Mouser (in the original and Super Mario All-Stars)
 * Robirdo (Super Mario Advance)

Bio for World 3-1
"''Surprise, surprise! In this world, you'll come across a huge waterfall. Do you dare brave enough a climb to the top? Consider this. If you drop down to the bottom-carefully-you can enter a secret room at the very bottom."

Bio for World 3-2
"''Welcome to World 3-2. Here, the only way out to get to Map 3 is by going up and down the ladders between Map 1 and 2. Watch out for sneak attacks and make plenty of headway by blasting off your bombs, where necessary."

Bio for World 3-3
"''Here, you'll find a whole bunch of rectangular rooms. You'll have to go up and then travel down to get inside. But stay sharp because you're is going to meet up with lots of Sparks. Watch your step at the very end. Mouser is waiting for you!"