World 6 (New Super Mario Bros.)
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Template:Worldbox Mario & Luigi, after defeating Petey Piranha, traveled on to World 6. It was a world in some mountain ruins, though some levels were in different terrain. It had 2 towers but no ghost houses. The castle, at the end, came after a level infested with Chain Chomps, Koopas and Warp Pipes.
The boss is Monty Tank, and he fires Bullet Bills at Mario or Luigi. He may pop out to throw a Bob-omb into the mix.
6-1
This level is filled with Bullet Bills. When Mario reaches a thin floor,he can either hang onto it or walk on it. When Mario is on the thin floor, it is hard for him to jump. If Mario Wall Jumps on the wall after the thin floor, he will get the first Star Coin. After the checkpoint, Mario should jump to the left to get the second Star Coin. Below another thin floor, after many Bullet Bills, is the final Star Coin. After the third Star Coin, Mario will reach the Flagpole.
6-A
Lakitus will be chasing Mario in this level. Soon after the first Lakitu is a large tornado. If Mario jumps into it and keeps going right, he will get the first Star Coin. Later, Mario should be met with two Lakitus at once. The player should see a part of the quicksand that is higher then the rest. If Mario goes into it, it will take him to an area containing the second Star Coin. After the checkpoint, Mario should find an area with several pipes. Mario should enter the single yellow one to go to an area with the third Star Coin (and a Super Piranha Plant). When he exits out of a red pipe, he should enter the green one next to it. After exiting a Warp Pipe, Mario will reach the Flagpole.
6-2
This level has water that can rise. After the Red Warp Pipe, the player should see a ? block with two coins above it. In between those coins are two invisible blocks, one containing a Beanstalk. Climb it and press a P-Switch, jumping across some flying blocks to get the first Star Coin. Soon after that, Mario should reach two tall cannons. One takes Mario to a bonus area, and one takes you to the second Star Coin. Mario can get the last Star Coin by going past a few Spinies. When Mario goes through the yellow Warp Pipe, he will reach the Flagpole.
6-Tower
In this level, the spiked bars return. Mario must jump before the spikes can damage him. Mario can get the first Star Coin by ducking to avoid a spiked bar and by jumping to it. After the checkpoint, Mario must quickly jump up to avoid the spiked bars below him. After the door is another area similar to the previous one. Mario should get to the top before getting the second Star Coin. To get the last Star Coin, the player must be Mini Mario. Mario must Wall Jump to a Green Warp Pipe. Enter it and avoid the four spiked bars to get the last Star Coin. This time, Mario is able to jump on Bowser Jr.. This fight takes place on a tilting platform.
6-3
This level has many pipes in it. To begin, Mario should hit a block with a string attached to it, so he can jump on it to get the first Star Coin. The player should then enter a red Warp Pipe, entering an area with purple goop. If Mario stands on the logs too long, then they will start rolling, causing Mario to fall into the goop. There is also an easy Red Coin Ring in this area. After exiting the area, Mario should enter the second green pipe from where he is standing to obtain the second Star Coin. Next, Mario should enter the pipe to the far right. This area contains many Piranha Plants. Mario can get the third Star Coin by finding a Moneybag, following it until it's on the pipe the player just exited, jumping on top of it, and moving left to get the coin. Wall Jump to escape the area. Soon, Mario will get to the Flagpole.
6-4
This level has Firebars throughout the level. When the first Firebar appears, Mario should Wall Jump above it to get the first Star Coin. Mario should then come across the thin floors with his back against the wall. To avoid most of the Firebars, Mario should stay down, below the thin floor. Later, Mario must press a ! Switch to create two blocks that let him advance. After the checkpoint, Mario should go left to get the second Star Coin. After the red pipe, the player will be in an area filled with thin floors. Because Mario's jumping is limited, he should only jump when he is close to a moving platform. When the path splits, the player should take the upper path to reach the final Star Coin. After the Warp Pipe, Mario will reach the Flagpole.
6-Tower 2
This level has conveyor belts with spikes on the ends of them. One third into the game, Mario can get the first Star Coin by simply jumping over spikes. The player should continue moving up, past the Dry Bones and more spikes, until they find two pipes. The right pipe will let Mario continue his way to the top. To obtain the second Star Coin, Mario should fall back down to an area filled with Spike Tops. He should then duck onto the conveyor belt and hit the blocks above him, ontaining the coin. Mario should climb a rope to get to the third Star Coin, and then he should go up and enter the double doors to face Bowser Jr. This time, Bowser Jr. will use the turtle shell technique this time, so Mario can't jump on him.
6-5
When Mario enters the Warp Pipe, he will be underwater. The player should continue moving to avoid the Deep-Cheeps that home in on Mario, or otherwise hit them with a Fireball. The first Star Coin can be found near a Red Coin Ring. Then, there are Whirlpools that can suck Mario in, causing the player to lose a life. The player must wait until the whirlpools shrink to get by them. The second Star Coin is located in a yellow pipe in between some whirlpools. When the player finds a whirlpool with blocks on the bottom of it, Mario should let himself get sucked into it, being taken into an area with the third Star Coin. After some Mega Deep-Cheeps and a Warp Pipe, Mario will reach the Flagpole.
The level starts out slippery ice. Go to the pipe at the far right, and it will blast you into the air.On top of the ledge you'll be seeing a candy cane-like pole you'll be seeing these throughout the level.Jump some more poles.Soon you'll be at a hill jump on the koopa and throw it off the ledge for the first star coin.Grab the pole, walk across the ledge,and jump down the sliding mushrooms. Go down the pipe and it'll blast you into the air go left in midair to get the second star coin.Jump over the pirahna plants and the mushrooms.Get out of a puzzle of blocks,and use the candy cane pole to swing to a ledge where you can slide under a wall to get the final star coin. Dash under some pipes to the flagpole.
6-6
6-Castle
Enemies introduced
