World 3 (New Super Mario Bros.)
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Template:Worldbox Somehow Mario and Luigi ended up in an island in World 3 of New Super Mario Bros.. The island had the first Ghost House in the game. The boss of this world was Cheepskipper, the giant Cheep Cheep.
Mario and Luigi can beat the game without needing to beat this world because if Mini Mario or Mini Luigi defeats Mummipokey in World 2, he will go to World 4 instead.
3-1
This level starts out with the player standing on a small section of land. Next to this land is a shallow pool of water – within which is a Warp Pipe. The player must go down this pipe in order to continue forth in the level. On the exiting end of the pipe, the player will be completely submerged in water. The first things the player will see are a Mega Cheep-Cheep and three ? Blocks – each block contains one coin. Five Cheep Cheeps will be encountered shortly thereafter, followed by two Brick Blocks and a ? Block. After a Red Ring is found, several more schools of Cheep Cheeps will be encountered; these can make retrieving all eight Red Coins difficult. Past an abyss, several more coins and a random power-up block. A Big Bertha can be encountered just past here. It will try to eat the player as he or she swims through a maze of pipes – a Star Coin can be found here too. An upside-down P-Switch can be found just past here; by pressing it, all nearby brick blocks will turn into coins, allowing access to another Star Coin. Up ahead, yet another Red Ring can be found. Past here, a warp pipe is found; it allows access to ground level, where the flagpole is located.
You will see a block when you start, it contain an item. Then you will see a red shell tortoise, you can use the shell to hit Brick Block, it contain a green mushroom. Afterward, you will see a red tortoise and 7 Goombas.
Then you need to jump until you see a yellow pipe. You can jump inside it and there is a big star coin. After you get it you can go out from the green pipe. You need to jump again until you see mushroom seemed like thing. It will move when you step on it. You can jump onto the green pipe when you are on the mushroom. After you go in, you will see a blue 'P' switch. When you jump on it, there are so many silver coins appear. You can get as more as you can. Then you can go out from the other green pipe. Then you will go to a special goal. If you cannot go into the green pipe, you can go straight to the original goal. You need to jump again, you will see a red ring, if you can get all 8 coins, you will get a special item. Then you will arrive the original goal.
3-3
3-A
3-Tower
3-4
3-Ghost House
This level is the first Ghost House in the game. The gimmick of the whole level is that there are several Orange ? Switches placed in the different areas of the level. The player is required to use them to reveal certain staircases and certain doors to finish the level. However, when activated, a time limit starts as the player has to move quickly to reach into other areas of the game. If the time limit is up, and the player doesn't reach to a certain area, the player will have to repeat it again. Just like all ghost houses in the game, this one has a secret exit, which can be accessed by pressing an Orange ? Switch and quickly retrace to a faraway, newly-created door before time runs out. If the player succeeds in finding the secret exit, he or she will find a Warp Cannon leading to World 6.
3-B
3-C
3-Castle
Enemies Introduced
