Super Mario Brothers Cheats, Codes, and Secrets for Famicom Disk System

Codes

Continue on same world
To do this, once you lose and have lost all turns for Mario or Luigi or both, hold A+B and then press Start at the Game Over screen.
Contributed By: DJellybean.
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Continue Where You Left Off
To continue the game from where you left off when you ran out of lives just hold down A and START when you see the screen that asks how many players you want to select.
Contributed By: Poopnug148.
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Level Select
After completing the game once you can actually choose what level to go to on the title screen. Press B to change the level number the demo is playing on.
Contributed By: Max_.
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Glitches

The Minus World
The Minus World was a glitch in the original game. To reach the level, stand on the pipe in World 1-2 that takes you to the flagpole. Break the 2nd and 3rd blocks from the right. Then, face left and jump. Hit the back of your head on the left side of the brick next to the pipe. If you do it right, you should be pulled through the wall. Quickly jump into the left pipe to enter the Minus World, which has no exit. If you wait too long, however, you'll end up in World 4.
Contributed By: MTRodaba2468.
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Secrets

Fireworks
If you touch the end flagpole with a 1,3, or 6 in the ones column (example 091, 243, or 256) you will get fireworks equal to that number (1,3, or 6) and 500 points for each.
Contributed By: MI4 REAL.
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Warp to World 6,7,8
To do this you must go to 4-2 and be big. Go straight untill you get to the pit where those horizontal ledges are, jump across and go under the blocks that come after the pit and go under the last block and jump, a coin box will come up, hop on it and distroy the box above you, then get down and go under the second to last box and jump, another coin box will appear, jump on it and distroy the box above you, then distroy the first box while still on the second coin box, a vine will appear and jump on it and go up. Now just run and get the coins that appear and once you get to the end there are three tunnels that lead to world 6,7,and 8
Contributed By: SMurphy.
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Warp Zone to World 5
In World 4-2, proceed to the end and run over and past the end pipe by taking a platform earlier in the level and jumping onto the ceiling. After passing over the pipe to the end of the level, you will find a lone pipe being the warp zone to world 5.
Contributed By: MI4 REAL.
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Warp Zone to Worlds 2,3, and 4
In World 1-2, proceed to the end and take the up moving platforms and jump on the bricks to your right and run over the end pipe, all the way to the right. You will be in a warp zone where you can go to world 2,3, or 4 by warping down the desired pipe.
Contributed By: MI4 REAL.
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