PIGPOG - THE BEST CODE! Randomly changes placement of enemies. Example: fight Kupa and find Princess Toadstool on level 1.
XVXOKK - Similar effects to PIGPOG above.
SSSAPE - Drunk Mario.
PGPPOG - Level 1-1 underwater. 1-2 is an underwater tree level. After that just gets too wierd...
APZPUG - Similar to PGPPOG above.
APZPEG - Never ending water level.
APZPOG - Underwater, randomly changes placement of enemies, earthquakes.
SIPPOG - Screwed up underwater levels.
OSTPGP - Randomly changes placement of enemies. Pipes take you to strange versions of level 8.
POGAKA - Everything but enemies are invisible.
ZOTPOG - Hammer bros. and jumping turtles galore.
UUPOGS - Changes around stationary objects and add big pits.
GEGEIE - Screen convulses, enemies made of Kupa parts, and screwy objects. Gives you a nice big headache.
AKAPIG - Bricks in air. Jump at the very beginning to survive.
SOSAKA - Long strings of coinboxes and axes. Some are not there.
AKAPOG - Blue oblivion.
POGAAI - Illusion land.
ZIGAEP - Mega purply crazed level.
EKGAIS - Bright colors.
POGAAI - Underwater colors.
AAAPAK - Climbing madness: Vines everywhere.
APESSS - Walk on invisible surfaces.
PKPOKK - Clouds replace bricks, star music.
IPEPNY - Fire in 1-1.
NPEPNY - Bullet Bills in 1-1.
KPEPNY - Flying Fish in 1-1.
OPEPNY - Lakitu in 1-1.
SNAPEL - Peach splotches for bricks, strange pipes, wierd music.
APZPVG - Mixed up enemies
EATOZS - Never ending wall.
SIPPNG - Bowser's castle's underwater.
SIIPKK - Weird level 1.
SPEPNG - Weird level 2.
SPPPNK - Weird level 3.
PIPOIS - Weird level 4.
PGAPGG - Weird level 6.
AAPOTS - Wierd level 7.

ISTLLT - No fireballs.
IOTLLT - Wrapping fireballs.
SEXLLT - Shooting a fireball teleports you to the top of the screen.
IOTLLT - Invisible fireballs that make enemies everywhere vanish.
TOPLLT - Acid fireballs that eat through the ground.
GKPLLT - Fireballs keep exploding on what they hit.
SEGSEG - Jumping through blocks gives you firepower and changes sky color.
KILLLT - Shoots 2 fireball burst.
STPTVI - Fireballs explode for longer.
TIEEZT - Start out small with firepower.
SENEPP - Lakitu appears in the first level and no Goombas.
POZLLT - Fireballs from different vertical.
PONEYS - Mario doesn't wear firepower clothes.
KIZLLT - Small Mario can shoot fireballs, but only while moving.
KISLLT - Hold fireballs in Mario's mouth before he spits them out.

AISSON - Walk through any solid wall.
APEPAK - Long strings of coin boxes.
AZAPAK - Longer strings of coin boxes.
AGELES - Hit bricks disapear. Blocks act like vines to strange warp zones.
PIOISS - Left side of objects behave like coins.
KILPAK - Changes location and of objects and how they look.
EONPAK - Walk through pipes and walk on clouds.

AEEPAK - No ground.
AEYPAK - No ground, but it looks like it is there.
SEEKIT - Ground is one block lower. Enemies fall through.
AZIPAK - Ground of two types of brick.
AXEPAK - Ground of pipes.
EOAPAK - Ground of vines.

GELLOS - Boxes do not give anything.
OPEAOZ - Black coin boxes.
ZXLUUU - Rain coins.

AAOPAK - No background.
SIKPAK - Screwed up background.
EONAKA - Background is a mess.
KOPPOK - No hills nor bushes.
TONPAK - Some objects in background are solid.
YYOPAK - Only couds.

XXXAKA - Only play Duck Hunt.
PEOAAA - The game goes directly to Duck Hunt.
ZVZEIE - Pressing start resets.

NLLNYY - "Preschool" rap.
STOPGO - No music.
PIEPGO - Always star music.
ZYZYVA - No bass.
LYUNIT - When Mario hits a brick it will goes on crackling for a while.
POZYYN - Squeaky music.
PTZYYU - Buzz noise on pause.
SENYYL - Fireball sound when Mario jump's.
ZYZYXA - Random notes.
STLYNY - Tiny bit mixed up music.
LIONEY - Fart noise when Mario jumps.
KAEPYO - Water music all the time.
PTEPYP - Dungeon music all the time.
YYAPYO - Koopa castle music all the time.
TPEPYO - Star man music all the time.
GGAOAP - There is usually no music.
STANLY - Jazzed up back ground music.
TZEPYO - Low back ground music.
ZZAYGN - Beepy music.
STPYYY - Flat music
AVVOAE - Koopa castle music when you are outside, not in a dungeon or a water level.
GVVOAE - Dungeon music when you are outside, not in a dungeon or a water level or a castle.
TVVOAE - Circus music when you are outside.
IVVOAE - Cool music.
STINLY - The music changes.
STONLY - The music starts and stops.
STLNLY - Crazy space jazz.

POGUUU - Floating coins.
OYUASX - Glowing coin boxes.
PAOEPO - Coin boxes blink faster.
SEPUEG - Hit a mushroom block and watch your score soar.
OPEANU - Coin boxes break & turn invisible!
LUNLLT - Enemies pop out of fireflower boxes rarely.

STVLLL - Frogger: Can only jump.
LUYLUN - Wrapping moon jump and upward raining coins.
XUYLNN - Will not drop from jump until let go of 'A'.

POSTIT - Retarded evasive mushrooms.
LUGLUG - Mushrooms and stars lug around.
LUILUI - Mushroom counts as star.
UUOSEG - Blocks jump when hit, mushrooms shoot downward, and Mario moves retarded when big.
LUKLUK - Mushrooms and stars stay put.

EAKKPO - No enemies.
SUEISA - Enemies count as fireflowers.
PNVKEE - Monsters sneak up behind you, appear out of nowhere, and fall out of the sky.
PSOSEA - The enemies are part of the background. Sometimes the flowers hurt Mario. Star hits Goombas.
AENKKA - Frozen enemies.
STAGEO - Enemies throw hammers.
POEISO - Goombas change to invincible koopas when jumped on.

PIGOAP - Swim in air.
SZLIVO - Stay big, keep fire - even when it doesn't look like it.
POSTEN - 360 jumps and moonwalks.
AUNTXY - Mario's feet spin when he runs off of a platform.
TIEEZT - Shadow Mario.
IIAAZT - Always look like fire Mario.
POSTOY - Scrambled mario.
POSTON - If Mario is facing forward then he's Luigi, if Mario's facing backwards then he's orange Mario.
AENKKA - Frozen enemies.
AAATIO - Only mario moves.

VAXPOG - Changes the order of levels.
KILLLU - Once you get big and jump, you are warped to the next level. You keep warping through levels and negative levels until the game freezes up.
POGPIE - Moving objects that Mario touches follow him.
POGPIG - Tubes to oblivion.
NSSIEE - Kick squashed Goombas like turtle shells.
TITEIE - Laser show.
KILLEN - Mario and enemies move fast and lurch around.
ASTLUN - 'A' kills Mario.
OKZAPO - Every button pauses.
APYEVY - Billions of points awarded. Timer is simply huge.
SANAPO - Play with the gamed paused.
KALZSN - Siezure world.
AEAZVY - Moving backwards causes Mario to warp forwards in the level.
TEAPYE-IPEPYE-SOAPYA - Objects are displayed along as Mario walks.
LLLLUY - Wind blowing against Mario.
OPEALY - Displays "TIME OUT" on each level.
OOOSEG - If you hit a brick a few times, Mario is teleported miles and miles into the sky and it takes him a long time to drop. Mario can move while falling. While Mario is up there, the timer is stopped. Blocks bounce when hit. Hard to move when big.
ELVISS - Mario is doomed to slide forward.
KKPOGE - Meltdown: Game blinks and slows down, then locks up.

YSAOPE+YEAOZA+LXAPYA - World -1.
YSAOPE+YEAOZA+SZLIVO - World 0-1.
YSAOPE+YEAOZA+AOAPYA - World H-1.
YSAOPE+YEAOZA+POAPYA - World I-1.
YSAOPE+YEAOZA+ZOAPYA - World J-1.
YSAOPE+YEAOZA+LOAPYA - World K-1.
YSAOPE+YEAOZA+GOAPYA - World L-1.
YSAOPE+YEAOZA+IOAPYA - World M-1.
YSAOPE+YEAOZA+TOAPYA - World N-1.
YSAOPE+YEAOZA+AXAPYA - World X-1.
YSAOPE-YEAOZA-NEAPYA - World ?-1: Stuck in Bowser's fish tank.
YSAOPE-YEAOZA-VEAPYA - World ?-1: Crazy castle
YSAOPE-YEAOZA-KEAPYA - World ?-1: Lame cloud level.
YSAOPE-YEAOZA-EEAPYE - World ?-1: Flooded World.
YSAOPE-YEAOZA-PEAPYE - World ?-1: Night time coin swim.
YSAOPE-YEAOZA-ZEAPYE - World ?-1: Turtle castle.
YSAOPE-YEAOZA-LEAPYE - World ?-1: Flooded turtle castle.
YSAOPE-YEAOZA-GEAPYE - World ?-1: Lame flooded castle.
YSAOPE-YEAOZA-IEAPYE - World ?-1: Dead drop.
YSAOPE-YEAOZA-YEAPYE - World ?-1: Trapped dungeon.
YSAOPE-YEAOZA-NEAPYE - World ?-1: 3-Level Mario game.
YSAOPE-YEAOZA-KEAPYE - World ?-1: Randomly play levels, twice in a row each.

AATOZA - Start players 1 & 2 with 1 life
IATOZA - Start players 1 & 2 with 6 lives
AATOZE - Start players 1 & 2 with 9 lives
VATOLE - Start player 1 with 8 lives and player 2 with 3 lives
SXIOPO - Infinite lives for both players
APZLGK - Super jump from a standing start only
TPZLTG - Super jump from running only
GPZUAG - Super jump from turbo running only
APZLGG - Mega-jump from a standing start only
APZLTG - Mega-jump from running only
GAZUAG - Mega-jump from turbo running only
YAZULG - Moon Gravity from a standing start
YAZUIG - Moon Gravity from a running start
YAZUYG - Moon Gravity from turbo running only
OZTLLX + AATLGZ + SZLIVO - Always stay big
YSAOPE + YEAOZA + PEAPYA - Start on World 2
YSAOPE + YEAOZA + ZEAPYA - Start on World 3
YSAOPE + YEAOZA + LEAPYA - Start on World 4
YSAOPE + YEAOZA + GEAPYA - Start on World 5
YSAOPE + YEAOZA + IEAPYA - Start on World 6
YSAOPE + YEAOZA + TEAPYA - Start on World 7
YSAOPE + YEAOZA + YEAPYA - Start on World 8