NES Super Mario Bros. (Europe) (Rev A), some nice GG codes!

[Cyperium]

ATASSP - Don't get hurt when you touch enemies you can stomp on.

ATZSSP - Don't get hurt if you touch any enemy.

PTZSSP - When you touch a enemy you get big if you are small, small if you are big, sometimes you may die and Game Over music plays even though you only loose a life.

ATLSSP - No invincibility time when you get hurt by an enemy, if you die you may transport to different levels of the game although the stage counter remains the same.

PTLSSP - No invincibility time when you get hurt by an enemy, no side-effects (that I know of)

PTISSP - No sound when you die.

ATISSP - You can take damage but not die. Weird things may happen to the enemy that you touch, a piranha plant caused the game to freeze once, usually the game doesn't freeze though.

ATTSSP - Can't stomp enemies (you simply go through them and they don't die), you can shoot them though.

PTTSSP - Enemies transform into other enemies when you stomp them (mostly transform into turtles)

TGAPZT - Can go down any pipe.

AYZTPK - blocks doesn't get destroyed, as little Mario you can have a unlimited amount of bonuses, as big Mario the ?-blocks acts like bricks, taking money causes glitches and the game often freezes when you take money.

KONTPO - Fireballs don't bounce, they simply vanish when touching the ground.

PONYPO - The left side of the screen doesn't stop you, you appear at the right side instead, as does enemies and fireballs etc., go two screens left to make the graphics represent the actual layout.

OVTOAK - Can walk on background (except clouds), cannot walk on the bridge in bowsers room.

ZVTOAK - Can walk on clouds and lava (and the bridge at bowsers room) unfortunately you can also walk on water which makes it impossible for water levels to start.

[xirtamehtsitahw]

You have quite a few cool codes, but some seem a bit dubious in quality. A code which, though you can break ? blocks as Super/Fiery Mario, but causes the game to freeze upon collecting loose/floating coins? Yikes. Sorry, but I'd have to pass on that one. I'd still give a thumbs-up for the codes to be added to the already large database, though. And, you get a +rep for submitting these codes.

[Cyperium]

Here's a some good quality

ZAELKGPA + ZLOUEGGT = 1 coin worth 2 coins
GAELKGPA + PPOUEGGV = 1 coin worth 4 coins
ZAELKGPE + APOUEGGT = 1 coin worth 10 coins

First code shows coin count differently (by steps of 2, 4 or 10), second code sets so you get 1up after less coins than usual (after 50, 25 or 10)

[Cyperium]

ZEEUPIPA = Longer slides

KEPLUN = Bowser jumps slower (gives you more time to run past him)

[Cyperium]

AAXUATZA - Little Mario and big Mario can shoot fireballs, as well as fire Mario.

LPNATPZP - When you start, the game acts like normal but you can't move, instead Mario begins walking as if in demo. Pause will glitch the game. Select takes you to the title screen.

PAPLOG - Coins also give 1up.

PAYLPT - Bubbles from Mario even though he's not in water.

[Cyperium]

AXELYYGP - Time is slower (00 - FF, where 00 is with no delay at all, default value is 14 hex, this code has value 20)
PANLLYTZ - When the time reaches zero it wraps to 999 (if you make the stage it counts down normally to zero though)

[Cyperium]

SUELZPLZ+AEELLPYA+AVELGPEZ=When you fall in a hole you come back from the sky. If you get Time Up you will get to a never ending loop of falling, also if you die from a enemy. Don't go up to the sky bonus area, you won't be able to get back down. Third code is just to keep the music playing (as it stops when you fall down the pit otherwise, it isn't really needed).

SUELZPLZ+AEELLPYA+ATKSXPSA=Invincible both from falling down pits (you fall back down from the sky) and from enemies. Stops the music. Time Up will fly you upwards and will not allow you to come back down though. Don't get up to the sky bonus area, you won't be able to get back down. The last code is the one that keeps you from dying from enemies, that code may hang sometimes so you can use a different invincibility code for that if you want.


AEXZONPI - Scrolling is always enabled, no ending message displayed and toad/princess is gone when you take the axe though you still make the world.
SZOPZNSE - Scrolling is always enabled, no ending message displayed and toad/princess is gone when you take the axe though you still make the world (alternate).
AAOPPYPA - Scrolling is always enabled, no ending message displayed and toad/princess is gone when you take the axe though you still make the world (alternate).

AEXXEYZI - Scrolling begins instantly

AVNPZTXZ - No Warp Zone message is displayed, scrolling doesn't stop, pipes take you to -1, 5 and -1.
AENPLTGA - No Warp Zone in World 1-2, the pipes simply takes you to the flag.
IENPLTGA - Warp Zone to World 5 in World 1-2 (and you can go to World -1), Warp Zone to world 6, 7 and 8 in 4-2 (if you go to the end of the stage), can only enter World 7 though, the vine takes you to "square", 0 and 0.
TENPLTGA - Warp Zone to World 6, 7 and 8 in World 1-2, haven't tested the Warp Zones in 4-2.
YENPLTGA - Warp Zone to World square, 0 and 0 in World 1-2. World 0-1 is a underwater castle which can be beaten (press B to get to the title screen), World square-1 is a underwater level that can't be beaten.

AENAGYZA - Warp Zone (in 1-2) to World 2 takes you to World 0.
PENAGYZA - Warp Zone (in 1-2) to World 2 takes you to World 1.
PENAGYZE - Warp Zone (in 1-2) to World 2 takes you to World 9.

VZPLIU - Doesn't increase stage when you make the stage.

IELPKG - World 1 is World 2 (00-23) LXLPKG is 8-4
ZELPKK - World 1 is World 3
TELPKK - World 1 is World 4
LOLPKG - World 1 is World 5
YOLPKG - World 1 is World 6
LOLPKK - World 1 is World 7
AXLPKG - World 1 is World 8

TAISUN - Clean move through walls to the left.
GZISUN - Clean move through walls to the left, can move through to the right once inside.
ZTASEV - Move through walls, left and right (clean move through walls to the left).

EKLOSG - Skip walking into pipe to 1-2
XKLOKG - Start in the bonus area of 1-1
AVLOKG - Start in 1-4 (it's still basically 1-1 but since there aren't any pipes or exits you won't notice)

OYYLXU - Coins travel higher when you hit coin blocks
NYETYXTE - Hit (and be hit) anywhere to the left of you and at the same level as you when you are Super or Fiery Mario, doesn't apply to coins.
AAEVAZAZ - Hit (and be hit) anywhere above you on the same horizontal position when you are Super or fiery Mario, need to be small Mario to get on elevators, doesn't apply to coins.

ELUZVNYK - Infinite time (isn't set until you make the stage).

ATXSETOP - Money aren't removed, so you can take as many as you want.

AAUUTTIZ - You aren't restricted from firing, but you can still only have two fireballs on the screen at the same time.
AUTLTT - Fireballs wrap across the screen.

GEPKNO - Enemies and items transform into balls of fire when they die, enemy overload happens though so you can't beat the stage. Value can be changed to transform into different things.
AVZGEP - Enemies can't die, enemy overload happens and you can't beat 1-2.
AEIATG - Don't get any points from enemies or powerups, don't even get extra life from the 1-up mushroom.
ASIAIG - 1000 points stay on top of the screen and eventually may transform into 1-ups.

[Cyperium]

NYVLYIYE - Walk quicker in sequence to 1-2
PELLYP - After you die you come climbing back up
PAYPAZ - After you die you come climbing back up (better)
AAGINO - You don't change state when you take damage
AEAIVA - When you hit enemies you get whatever bonus that you took last, doesn't apply to fire-rods
AEASVA - You defeat enemies as if you had the star
ENPSSA - Go through enemies, you can still kill them with star/fire and take bonuses.
YNZSEE+ESZSOA=Can stomp on things that normally can't be stomped on, even Bowser! They turn into red koopas. Doesn't apply to fire-rods.
PULSNE - Can stomp on enemies under water (can be a bit tricky to get right due to swimming).

[Cyperium]

PVYUON+AXYUXY - Gravity is weaker (has a effect on most objects, elevators that move up and down may vanish to oblivion and Bowser has smaller jumps, everything else bounces/jumps further though, including yourself). Gravity can be altered by altering the value of the first code.

The code was a result of investigating a six letter code found by Adam Smith, found on YouTube, which made objects fall very slow. It is different than his code though as you can alter the gravity, has less glitches and basically works differently.

[MathUser]

nice codes. You making them yourself? I happened upon the one where you could stomp on any enemy and turn them into a koopa long ago. I didn't write it down so it was lost until you just posted it again.

[Cyperium]

Yes, I make them myself, it seems a red koopa is some kind of default when enemies transforms, so codes will have a similar effect. I remember seeing a code like that before too, but I couldn't find it either.

If a code is inspired by someone else or if it's a 8-letter version of a 6-letter code then I always give credit (when available).

[Cyperium]

ASAUIG - Multijump.
ASALTG - Autojump holding A.
AIPULP - Walk while crouching.
AAZUYL - Crouch while little (animation changes to a wrongly mirrored version of the "I give up" animation), you can jump through roof while crouching while you are little.
AALLLL - Crouch in mid-air.
AAAUYZ- Skip the animation of going into pipe, arrive at the destination instantly.
GAPUYX - Walk into pipe in weird ways (sometimes he jumps to his death and stuff), you always arrive at the destination though.
GAGEZO - Traces after enemies and objects.
PEGKVZ - Enemies come back when you stomp them and become invincible.
AZAKEP - Enemies are faster.

[Cyperium]

ATEALLXZ - Keep coins and score after Game Over.
PEVGUYGA - Bridge to Bowsers room almost instantly destroyed when touching axe.

[Cyperium]

AEVUAXIA - Don't need to be stopped by block at castle to finish stage (use with walk through walls code).
SZEINTAX - Walk through walls (skips entire routine), block at castle won't stop you so you won't clear the stage unless you use it with AEVUAXIA which let's you clear the stage without being stopped by the block.

[Cyperium]

GKUAAOSX+
SNUAPPTN+
XUUAZPYA - Press START to skip to next stage. Each castle stage has to be defeated to increase world though (as otherwise it will just skip to 1-5, 1-6, 1-7. etc. Disables pause routine.