Ed the Moogle presents 
Mostly useless Super Mario Brothers 1, 2 and 3 Game Genie codes
by Ed the Moogle
Version 0.42

Don't copy these without giving proper credit. Each and every one of 
these codes is safe (I haven't heard of any NES games being permanently 
messed up from Game Genie codes, except for a few with battery backup, 
which none of these games have...). Many thanks to Adam Blake, who 
inspired me to create these, and I used and altered some of his codes in 
this list. I also used some codes off the Game Genie Code Creator's Club 
homepage, and any thanks not specifically given are acknowledged.

They may be useless, but they're a lot of fun to fool around with!

"The key to a good code is its uselessness." -Adam Blake

A couple of things I've noticed while altering codes. (When I say 
"strand" I mean a group of codes with similar effects, usually taking a 
code and just changing one letter to create new effects, like the ZTEOAK 
family in the SMB3 section).

1) A code "strand" tends to only work with one row of letters. For the 
rest it either doesn't do anything or freezes the game. Most of the 
time, this is true.

2) In a "strand" of codes, you usually can only change one letter. 
Changing more than one often results in a failed code (either a freeze 
or no effects at all).

SMB
Note: I used these codes with a Super Mario/Duck Hunt/Track Meet cart, 
so some or all of these may not work on your version of the game.

Behavior Codes

ITAGEO- Glitchy graphics, invisible enemies.
SPEPNY- Fire is shooting at you like in the Castle levels.
IPEPNY- Fireballs launch at you more frequently.
KPEPNY- Cheep-cheeps jump out of ground.
GPEPNY- Similar to above.
PPEPNY- Lakitu is on the ground!
IUEISA- Hit an enemy to power up.
SALLEY- Enemies freeze or move to the right.
AENLAS- Fast acceleration when running right.
ZSTOIG- Pulled to right. Green blocks appear when you jump.
PIGOAP- Swim with no water. Useful for exploring "New Worlds" (Code-
created worlds). A great one from Adam Blake.
PAKPOG- Many enemies appear in each level, incuding the "Fire Ropes" 
from Bowser's levels!
KENUAI- Mario runs very fast and bounces off of things.
POEISE- Game freezes if you touch an enemy.
TALLEN- Enemies move quickly to the left and stop when they hit 
something.
EEEULV- Short range, rapid-firing fireballs.
PKKULV- Fireballs fly upwards.
IOALUT- Fireballs explode before hitting something.
POIISP- Stomp any enemy and they'll fall through the ground.
EPZKIX- Lots of Koopas.
APZKIX- More Koopas.
ZPZKIX- Even more Koopas! There's TONS of them!
PPZKIX, OPZKIX, ZPZKIX, LPZKIX, UPZKIX, GPZKIX, KPZKIX, IPZKIX, SPZKIX, 
TPZKIX, YPZKIX, NPZKIX- All of these create Lakitu, and each has 
slightly different side effects to it.
VPZKIX- The best Lakitu code! Lakitu and his Spinys become decapitated 
Bowsers!
TIKPOG- Combination of the Lakitu and Koopa codes, and more!
VIKPOG- Similar to TIKPOG, but no Lakitu.
YIKPOG- Very few enemies.
NIKPOG- Lakitus and Goombas and Koopas oh my!
SIKPOG- Koopas and Bullet Bills, and a flying Bowser at the top of the 
screen! SWEEEEET!
IIKPOG- Koopas.
KIKPOG- Koopas, Cheap-Cheaps, and Bullets.
GIKPOG- Koopas, Bullets, Fire-Ropes.
TATLGZ- Mario goes right through bricks.
SANOXG- Instant death.
ALLNIE- Morphing Mario.
AVUNIE- Get a powerup for game reset.
AYYNIE- Hyper Mario.
ANNNIE- Wierd stuff happens.
VSTOIG- Fall through ground.
GENUAS- Mega speed!
OPPEPP- Blocks flash faster, scenery shifts randomly.
PPPEPP- No enemy animation, blocks flash faster.
EPPEPP- Game freezes when you grab a powerup.
PISSON- Can run through objects. Can't finish level.

Replacement Codes

LLTPLV- No pits, question blocks are replaced with wierd scenery.
TVAPKK- Ground moves down 1 block, enemies fall through.
OGAOGG- Pipes and ? Blocks are everywhere.
EIOPIK- Fragmented bushes and clouds.
IIIPPG- Misplaced scenery.
PIKPGG- Fragmented Scenery.
ATEOPV- Pipes everywhere.
POPOIK- Moves ground up 1 block.
POLPIK- Ground is gone entirely. Use PIGOAP or you'll fall and die.
TOOOAI- Objects are misplaced. Cannot finish the level.
GIOPIK- Scenery shifts to the right.
ZIGPTK- Tetris land!
IIIPKG- Level is gone, only a pit remains. Try exploring with PIGOAP. (I 
didn't bother.)
XIGPTK- Triangles along the bottom of the screen, all other scenery is 
gone.
SSSXUN- Level keeps changing.
ISSXUN- Very similar to SSSXUN.
KKKXUN- Scenery keeps changing, shifting you forward into the level. 
Cannot finish level.
KKKEEE- Scenery is either gone or glitchy.
AJAGEO- Wierd graphics, enemies are invisible.
GLEEKO- Wierd colors.
XONENO- Black Blocks.
VOPEIS- Screwed up graphics, dark blue sky.
NEPEIS- Screwed graphics, green sky.
IOPOIK- Ground higher.
AOPOIK- No ground!
XIGPTK- Warped sprites.
AIGPTK- Wierd Mario.
AUXENO- Blue and Green.
YAGNAG- Some SFX different.
VAGNAG- Some other SFX different.
SAGNAG- Some SFX gone.

New Level Codes

SNOOPS- Flat, endless 1-1. Only enemies left.
SIGPSK- Level 5-2 to 5-3 with no enemies to "Dark" 2-3 to ??? (I didn't 
play any farther)
TOOPIS- Endless block level.
OOLPIS- Endless castle with waterfalls.
SGOPOK- Underwater 4-1 to underwater 1-3 to short water world to even 
shorter water world to freeze. Give this one a try.
GEOPIK- Ruined world. Cannot finish the level.
ZIGPSK- Level 2-3 with huge pit to ???
SOOOAK- "Earthquake Ruins" level. After completing the stage, you fall 
to your death.
XIGPSK- 4-2 with no Lakitu to 5-2 to ???
PIPPSK- 5-1. Loops forever.
AIGPSG- Endless block land.
POOPII- Flat 1-1 with a big pit.
PPPOAK- Shrapnel World.
TPPPPI- Endless world with lots of blocks.
LLLPSG- Castle world?
LLTPLT- Strange worlds.
AGOPSK- Empty, sunken castle again and again. Freezes after completing 
8-1.
POOOAK- Destroyed world.
PGIPSK- Flat, endless world.
APPPPI- Empty plain.
OPPPPI- Wierd world.
OOEISA- Hit an enemy to power up.
SIIPKK- Wacky world.
IIIPKK- Wacky world part 2.
IIPPNG- World 2-3 to ???.
KIPPNG- Strange castle.
GIPPNG- Sunken 2-4.
TIPPNG- Sunken 4-1.
YIPPNG- Sunken 5-1 to 5-2 with Bowser to 2-3 to normal 5-1 to sunken 
secret zone to freeze. TRY THIS ONE!
NIPPNG- 2-1 endlessly!
LIPPNG- Some sunken castle.
XIPPNG- Night time "-3" indefinitely.
ZIPPNG- Underwater 8-4.
OIPPNG- Sunken castle with koopas!
PIPPNG, TIPPNG- Sunken 4-1 to "dead" castle.
EIPPNG- Crazy cloud land which you can't finish.
AIPPNK- World 3-1 indefinitely.
OIPPNK- World 1-2 to ???
ZIPPNK- World 7-1 indefinitely.
XIPPNK- Some endless level.
UIPPNK- Nighttime 1-3 to ???
KIPPNK- Sunken bonus level infinitely.
VIPPNK- Some Lakitu level to ???
YIPPNK- Some sunken castle.
IAGOSK- Bricks and clouds everywhere.
EAGOSK- Bullets and water to ???
PAGOSK- Gone world to freeze.
GIGPSK- A bridge level.
SLAPIT- Bridge.

Freezes/Traps

NZXLNN- "The wall".
GIPPNK- Odd castle trap.
EIPPNK- Sunken clouds trap.
UIPPNG- Block world.
LXLLUN- Jump and the game freezes!
TIPTUP- Frozen Goombas.
IANOXK- No time left on timer!
PIGPSK- Frozen cloud level. Can't move.
OIGPSK- "Blocks in the sky."
TIGPSK- Similar to OIGPSK.
GIGPSK- A line of blocks and a bridge appear, and you unexpectedly die.
KIGPSK- Endless brick trap.
GIGPSG- Block Land. Can't move.
PIGPSG- Drop, instant "Time Up" Death.
AIGPSK- Castle Plains. Instant death.
LIGPTK- Wierd trap.
AIGPTK- See above.
OIGPTG- Glitchy Land.
AIGPTG- Another Wierd trap.
PIGPTK- Strange trap, but you can move around.
SIGPTK- Trap.
OXZOIG- Rock Pit.
TTOXUN- Cool freeze.
STOXUY- Title screen freeze.
SEIINK- "Falling" noise and freeze when you hit a block.
ITAGEP- World flashes many colors and eventually freezes.
KGKOPK- Title freeze, no background. Stupid.
ITOXUN- Another title freeze.
OOZPIS- Cool freeze.
OGAOKG- Wierd death, discolored title screen.
INSASE- Invisible ground. Freezes.

Other Codes

AAAETV- Shadow Mario.
ZISPIK- Seriously glitchy graphics.
YOPENO- Wierd Colors.
PZONAN- Music stops and starts again, and is very different.
SGAOSG- Wacky Colors.
INSAKE- Wierd graphics.
INSAGE- Slow and glitchy.
INSAIE- Glitchy.
INSAVE- Glitchy graphics.
INSAYE- Invisible ground with decapitated Bowsers and jerky camera 
movement.
INSANE- Great scrambler.
INSAZE- Similar to INSAYE.
INSAPE- Just like INSAYE.
INSAAE- Very similar to INSAYE.
INSAXE- Blocks and ground look odd.
INSAUE- Ground is a bunch of stripes, other scenery is odd.
POLAKE- Discolored scenery.
YAZNEZ- Music is odd.
NAZNEZ- Similar to YAZNEZ.
KAZNEZ- Similar to YAZNEZ.
IXTEEE- Ground is a bunch of lines, other stuff invisible.
KXTEEE- Similar to IXTEEE.
VUNEEE- Number Land.
YUNEEE- Very much like VUNEEE.
GUNEEE- Very much like YUNEEE.
OXZOIG- Avalanche!
TOOPIE- Nice graphics!
TEEING- Hit block for freeze.

That was a long list, wasn't it? After you try a few of these, you'll 
probably agree that SMB is the greatest game ever for Game Genie hacking 
:)

SMB2
Note: Some of these may not work, because some of Adam Blake's codes 
have different effects or don't work on my version. It is possible there 
is more than one version of the game or the Game Genie.

Note: If you don't notice the effect right away, leave the Sub-Level 
(you start the game there) and you may notice it.

Note: I only used Mario to test these codes, but they should work for 
the other characters as well.

Behavior Codes

EPAPPS- Enemies walk off ledges rather than turn around.
ELKELK- Enemies are invincible. Pidgits become glitches.
ZTEOAK, ETEOAK, STEOAK, TTEOAK, VTEOAK, YTEOAK, NTEOAK- Mario changes 
colors when you press Start. Objects fall when you pick them up.
PTEOAK- Just like ZTEOAK, except the sky changes colors, too.
OTEOAK- Just like ZTEOAK, except Shyguys teleport when you try to throw 
veggies.
ITEOAK- Same as ZTEOAK, except Pidgits are invincible.
EPAPAO- Mario grabs and throws objects with his feet!
NPYPYO- Can't pick up POW blocks.
AEEVLT- Enemies sometimes fly into the sky after you kill them.

Replacement Codes

KXZETZ- Many Snifits, some level structures altered, severe graphic 
glitches in some place.
LOZEAZ- Many Shyguys. All other enemies gone.
ZOZEAZ- Too many Shyguys! There's tons of them!

New/Altered level codes.

XOZEAZ- Enemies gone, level structure changed.

Freezes/Traps

GTEOAK- Fall to your death after starting the game.
ZEEEEA- Freeze after leaving Sub-Level.
LTEOAK- Same as ZTEOAK, except the game freezes after you throw a 
veggie.
KPIEPI- Title freeze.

Other Codes

KPIEPP- Many SFX different.
GAKEPK- Enemies change colors.
ZEEEEE- Wierd graphics.
XEEEEA, XEEEEE- Scramblers.
EPOPPK, APOPPK, PPOPPK, OPOPPK, ZPOPPK, XPOPPK, LPOPPK, UPOPPK, IPOPPK, 
TPOPPK- All of these change the sky color. Each is a different color 
(though most are black and gray). Some of the brighter colors get darker 
and lighter as you proceed through the level.

Yup, that's it. Not much compared to the SMB1 section, eh? Send me some 
codes for this game.

SMB3
Note: These codes may not work on some versions. Some of Adam Blake's 
codes don't work on my game, or have different effects that what he has 
listed, so there may be more than one version of the game or the Game 
Genie.

Behavior Codes

AOSUZI- Grab blocks out of anywhere and make holes in the scenery. Lots 
of fun! One of Adam Blake's best codes!
VYXXZS- Black clothes, and wierd things happen when you hit a block.
TVXXZS- Powerups fall from above when you hit a block, and you lose 
control of Mario every now and then when you jump on a block that 
contained a power-up.
SYXXVS- Mario does his Superman impersonation. Up, up and away!
AOSZZS- Hit a block and the game resets. Try and get through the game 
with this one!
AOSZZL- Mushrooms don't work. Try getting through the game with this 
one.
AOSZZI- Fly into the air after hitting a block, and come down at the end 
of the level.
AOSZZY- Pirahna Plants randomly become invisible. Makes the game a 
little tougher.

Replacement Codes

TYXXZS- Mario's clothes are black.
AYXXZS- Yellow clothes.
PYXXZS- Light Green clothes.
ZYXXZS- Green clothes.
LYXXZS- Blue clothes.
GYXXZS- Light Blue clothes.
IYXXZS- Gray clothes.

New Level Codes

ZTZOAS- Unable to move on map. Press A to enter a wierd ice level. 
Another excellent code by Adam Blake!

Freezes/Traps

TYXXZT- When you hit a power up block, the world flips around and you 
are unable to escape (I call it the "Parallel universe"). Give this one 
a try!
TYXXVI- Freezes when you enter a level.
AOSZZT- Game freezes when you enter a level, but the music keeps going.
AOSZZU- Game freezes when you get a mushroom.
AOSZZG- Game freezes when you try to fly.
NEUZUGAE- Glitchy map screen. Cannot move.
YEUZUGAE- Same as above, but better!
AEUZUGAE- Warp Zone. Plays music, but you can't move.
EEUZUGAE- Dark Warp Zone! Music constantly changes! This is my favorite 
code (that I made, anyway).
PEUZUGAE, OEUZUGAE, ZEUZUGAE, XEUZUGAE- All of these take you to a 
"Pattern Table", each with different music playing. Give these a try.

Other Codes

AOSZZK- Sound for "Power Up" different.
AOSZZA- Music on map different, level SFX glitchy temporarily.
AOSZZE- "Enter Level" sound slightly different.
AOSZZX- Sound for getting hit changes.
AOSZZK- Music and sound change when you get a mushroom.

Again, not nearly as much fun as SMB1, unless you find some seriously 
wacky codes to send me. Don't hesistate to send them in, after all.

This list is FAR from complete! Alter some of the above codes (see the 
Game Genie instruction manual for more details) or create your own new 
codes, and see if you can get some wierd effects, then send them to me 
and I'll add them to the list! Also, let me know if you find some 
effects for the listed codes that I didn't put under the description. I 
can be reached at edmoogle@hotmail.com (subject: chocobo) or 
brunerp@juno.com.

Also note: My Game Genie broke down a while ago, so I probably won't be 
able to make any more codes for a while :(
