Big list of nes codes

[Bite_Me2]

I made these codes on the actual game genie for the nes system.
There are some I made with FCEU and Nesticle.
A few of them I got from other sites. I don't know if they are NTSC or Pal
I have tested a lot of them on emulators and most work. I have posted these on other sites,But
GSHI is the only site i've found so far with rare and hard as hell to find codes with most systems.
With that said, Heres the list.

Adventure Island 1:

APZENE - Always have fire weapon
APLENE - Frog as weapon. Note: Get weapon first
APAENE - Double axes on pick up
APPENE - Axes travel far and fast
STEAKS - Different and more enemies

A boy and his blob:

AETPOZ - With this code,Get on the rocket.When you land,you'll fall underground at the creators screen.Turn off the code and continue to the right to read a secret little poem.Keep heading right to bypass all above ground dangers.When you get to the big pot screen,Use a ladder to climb the wall and continue game.

Doulble Dragon 3:

NNEPXGGI - 247 Energy for Billy and Jimmy

Dragon Warrior 1:

AELNLU - Removes upper left corner in fighting screen
PPPOVU - Shadow position in fighting screen
EGAKOV - Poisoned
IIIIIA - Talking anywhere gets you the princess
IIAIIA - Can't talk to anyone
YNPULA - No black screen when entering and leaving towns, stairs, caves
ASSULA many roof tiles in Breconary
KYSKYS - People disappear + walk anywhere in town
YYLLLX - Leaving towns or using stairs warps you to different areas
SAAKOV - Golem is everywhere
ULAKOV - Very low chance in meeting enemies
VIGTIK - Removes background in fighting screen. Note:All you see is the over world
background and enemies you meet.
EAAKOX - Brings up old save logs. (New game only)
VTUZOP - Get different armor every time you bring up the status screen
NYIPOT - 247 exp for green slimes
NYTPOT - 247 exp for red slimes
NYSPXTZE - $200 Gold for green slimes
NYVPXTLE - $200 Gold for red slimes
ZEPPEZ - Changes merchants colors
ZEPPUZ - Changes guards and old mans colors
ZOPPVZ - Changes colors of knights
LUIYLU - Can't enter Breconary. Note:Turn this code on in Breconary and leave the town,and you'll be near Dragonlords castle.
AEZTLT - Attack = 127
IEAKOV - Random enemies on over world
YNTIIA - Most people say things different than they did before
AAAEAL - Tile mod for bricks near steps in Tantegel castle
LLLLTX - Walk on the outskirts of towns
EAINAS - Strange monsters with unusual names near Tantegel castle on over world
Note: Beware and prepared. Monsters hit with a great amount of damage.
NPINAS - Drop enemy near Tantegel castle.Note:Most of the time he chants the stop spell and has a lot of hit points,But he's easy to beat.
PEGGYY - Different things said with door command
EAZZOP - Command arrow is moved to magic instead of talk
EEAZEY - Nothing but grass on over world. No enemies either
AEZPOA - Positioning for curse wizard in Breconary. Others:AEZP?A
KILLIT - Get out of long conversations
AAKOUPKL - Copper Sword is free
LTNPXTLA - $200 Gold for Drakes
AAVOOOAP - Herbs are free
SKOIVLSA - Spells use zero points for casting
AKPOOA - No enemies in caves
GIAKIE - Towns look flooded
ZTZTLT - Always excellent hit
KISKIS - Walk through walls in some towns
TEOPNPAA - Erdricks sword 2 gold
NYNPOTZE - 255 exp for blue drakes
AEPSEY - 36 keys after first use
GKPSEY - Infinite and extra items in list for selling
IEOOXPYE - Erdricks armor cost 26 in Breconary
???ULA - Where ? is, Use random letters
UNYUNY - Random effects
AAPAAP - Changes music tone
AELNOG - High level and lot's of stuff
AASULL - Walk through anything heading left only
AAXUPA - Princess position and character type
AASNLA - Entering status screen increases your level up to
level 6 only.
GUTKUT - Slimes and wizards in all towns
EAAGET - No enemies anywhere
OAAGET - Only meet green slimes as enemies (Everywhere)

Final fantasy 2:
LLLLLA - One character or enemy can attack as many times as there are enemies
LLLLGA - Characters + Enemies always miss
PEGLEG - Characters + Enemies do high damage
SKPOAS - Max HP 255 (In battle only)

Final fantasy 3:
AEPAAA - Enemies disappear when met. Note: You can't bypass all main enemies with this code on

Kings of the beach:
EEEKKK - Other team is lousy players
KKGEEZ - Players look different
KKPAAA - Other team always wins
KKGAKA - Both teams are wearing mostly white
IIIYVT - Skip introduction
OOOKKK - Player one jumps to the other team
AEAEAP - Knocks the ball out of the court and you still score
OUPKKK - Other team just stands there
OOPKKA - Scoreboard shows at all times
AEAXAP - Player one can't hit the ball over the net
XEUEUE - Most characters look the same
KEKOYA - Register woman's bikini is upside down
YXGEUZ - Plyr 1 has no shirt on and Plyr 4 looks nude
AOGEUZ - Plyr 1 has gray tank top,Plyr 4 has gray shorts
YOGOYA - Changes registry woman's bikini to her skin color
AUGOYA - Removes registry woman's bikini
KKAAAA - Two on one match or tournament. For this trick to
work, Go into Set Mode first, then exit with select and enter a
match or tournament. Note: Don't miss the ball the first round
or other team will automatically win in tournament mode.In match
mode, game won't continue.
EEPAAA - Other team never gets a turn
AUEAKK - Go to second round of tournament
AUAAVS - Skip playing the tournament rounds, just go through
the scenes.
POZAVS - Control both teams in tournament mode
AAAEEZ - Background color modifier on intro and other areas
Note: Change first or second letter for other colors

Mc kids:
PAKILYLE - 10 lives
GXKSUOSE - Infinite lives
AEAEPT - Jump as high as you want
AETTIA - Most enemies are gone. Note: A little glitchy
YEAELT - Small jump. Note: This code makes it easier to get the "M" under the springs on the moon in stage 3

Metal gear 1:
AEPGGY - waiting arrow is on for every message
AEPIGY - Area modifier code.Change 1rst or 2nd or both letters for different areas.
AEGIGY - Same as above but moves you to the right a little further. Note: Some areas you may get stuck.
AAITAX - Snake is invisible.Not invincible.you still take damage.
TTTTAT - Super quick punches.
PEPLET - Transceiver alarm doesn't work.
PELLUT - Sleeping enemies don't sleep as long.
AEPLGY - NO response on transceiver.
AELLGY - Faster reading on trncvr mode.
ILOSTU - Play as demo.I remember this one well.It only works on the system.Wait for the 2nd demo where snake is seen and quickly keep pushing start.You will have everything shown in the demo and be in that area.
AAAVAU - Punches don't hurt enemies.
AATAAZ - Speeds up airplane intro.
YEGSZN - Star with a lot of energy.
STIIKY - Dogs shoot at you (Lol)
STIISY - Dogs don't chase you.
STGIOY - Sleeping soldiers never sleep.
STZIOY - Soldiers spin instead of sleeping.(Alert and hard to get passed).
GGGAAA - Strange places in building one.Note: Best to use binoculars to check out next screen for best path.Otherwise,you may get stuck walking into a non movable area.Also sometimes there are no enemies except main enemies.
TITTYI - Walk anywhere.Note: Stay in actual game screens.Example,If you walk up from the starting point,you will get stuck in an unknown area.You can't enter trucks with this code on.A good area for this code is Building one where you first encounter the tank that won't let you through.Just walk through the building to get passed it.
YEPLAY - Different things said on the trncvr.Note: This code is best used in the 1rst truck where the binoculars are found.Just set the trncvr to 120.85 and keep calling and you'll get a different message.Sometimes it might be distorted graphics.Just cancel with select and do it again.
YELPAS - Really weird sound effects
AEGPAS - Sound effects off
KAPIIT - Reprograms the demos movements.
KAPIGT - Reprogram demo code 2
KAGIYT - Demos off
NYTITT - Demo has 247 ammo.Note: Play around with the 1rst,2nd and 5th letters to get different effects.
EAAATZ - Warp by just switching screens.Note: You may get stuck in some areas.
TTTAAA - Most enemies don't move.I only tested this for the beginning.So i don't know if it works in all areas.
YSYGYS - Turns music off during the game.
KISSES - Some enemies are sleeping as soon as you meet them.
GGGAPZ - Skip airplane intro much faster.
GITAAA - Most enemies except main enemies don't move through the entire game.
TTGAAA - Some enemies except main enemies are gone.
TTTEAE - Gain 4 stars just by entering next screen.Note: Getting killed twice resets the game.Turn the code off after getting the 4 stars.Or if your using the system,Just get killed the 1rst time and get the password.
AEIEIE - New look for gameplay.(New game only)Change 2nd or 5th letter for different effects.
AEIPSP - Weird sound effects #2
AEPZOO - Snake has no backpack
IIIILV - Demo has nothing to shoot at and no items to collect.
ZZZPOZ - Motor and tinging sound effects.
AEZAZP - Entering all trucks and doors can warp you or send you back to the area you entered them in.Note: Sometimes you may get stuck in a wall or building.Change 5th letter for different warping effects.
SUPIES - Most soldiers look like solid snake when facing right or left.
EEPIES - Most soldiers are invisible.
YEALEE - Frequency finder.(How to use it)Go to trncvr mode.Now push left or right to run through the numbers.push up for every number.If you find a frequency thats used in the game,Snake will say "This is solid snake,Please respond". If you don't find a frequency,An alarm will be sound.best to use in trucks or empty screens or rooms where no enemies will show.
NYYYAN - turn into a waving man.
SZLYPZ - No damage from bullets
SXTTXZ - No damage from hits
ZAIILY - I don't remember the area but this code and the next one start you in an area.
GAIILY - Area code # 2

Metal Gear 2 (Snakes Revenge):
AEPAGA - Invisible enemies and life gauge.
AELAZY - Knife & Punches can't hurt enemies
VIGVOY - Touching walls or trees can kill you
AAGTTY - Enemies shoot weird
AAZVSY - Walk almost anywhere except through walls, jeeps and some trees
SXGVKA - Infinite energy (Galoob code converted to 6 letters)
YNPVZY - Take no damage and start with invisible hand gun. Note: With this code,Nothing can kill you except running out of time. Note #2: If you die from running out of time, You will no longer be invincible and the game gets tougher. Note #3: This code does not work on passwords. This code is only good for playing the game non stop.
YYIYYN - All characters in the game appear to be skating instead of walking or running.
AEPVGY - Game starts where John gets captured (New game only)
YNPVAN - Start with most weapons plus silencer
NNZVGY - Start with 187 ammo. Note: Ammo amount appears as "7, I counted it as I fired each shot.
AEATOT - Weird areas. Note: Use with (Walk almost anywhere code).
AEPTEA - Take no damage #2. Note: This code is much better than the first one.Also works on passwords and stages with timers.You don't need air tanks with this code on.The only way you can die is falling in holes.
EAAZEY - Speeds up scenario in the beginning.
EAAZOY - Helicopter blade slowly flies off in the beginning.
EAAZSY - Helicopter in the beginning slowly flies to the left.
EAZZKY - Helicopter in the beginning slowly flies to the right and then left.
EAIZKY - Helicopter in the beginning flies downward.
YNAXGY - Get all 8 keycards just by talking on the transceiver. Note: When talking
to someone,The words won't make sense and the screen may glitch a little. But it will clear up. Once it it does, Go to the equipment screen after each message is done and you will see a new card.
YNPXGY - Start with backpack. Note: For this code and code above, You should get killed on purpose and get the password so that you don't lose anything you collect when using game genie codes.
PPZUGE - Have mines
LIAUTE - Have hand gun and shotgun
PPPUIE - Have flare gun and hand gun
AEPUGE - Most characters look like Solid Snake and hand gun looks like M.gun in weapon screen.
NNAUKT - Flare gun in 2nd screen from start zigzags back and forth really fast
KKAKKZ - Most enemies are purple
NNAKKZ - Most enemies are white
Snake and most allies are wearing white clothes upon entering 1rst screen up from starting point. Plus most items are white.
PEAKNZ - Snake and allies in blue outfits
POAKNX - Snake in his Metal Gear 1 outfit
AXAKNX - Snake and allies look nude
PEAGKZ - Turns path in the woods of 1rst stage blue. Work with 1rst and 2nd letters
for different colors.
KKPKUG - Enemies can't shoot you.
KKPKXG - Lot's of enemies when spotted. Note: Some enemies are walking and haven't spotted you yet.
AEZKUG - Eliminates one enemy and one spot light per screen.
AEZZXY - Skip story scenes Note: Most will be skipped, But some you will have to wait a minute or two to continue.
AAAEYE - Turns off music
ZZZZPI - Selecting weapons gives you short time invincibility.
VVLLYT - Password force code. Note: With this code, Anything you put in as a password will work. " Warning: Beware of random areas ".
XXLLYV - Password force code # 2 .Same as above but sometimes works better.
Note: I have tested this on emulators and it does work. Creating a password is a
little tricky, But it does work.

River city Ransom:
YNINAV - All attributes at 127 (New game only)
YNYYIV - Same as above (Better ???)

Spy vs Spy:
Note: NTSC? PAL? ,Idk.
What i do know is for the codes below, It's the one that doesn't have
the beige screen that has "SPY VS SPY" "Licensed By Nintendo Of America Inc"
When you first load the game.

OTTELY - White spy can't set traps
AEATAP - Black spy is instantly recovered from dieing (No delay in recovering)
EATASS - Door traps have no effect

Spy Vs Spy

Note: These codes are for the one that does have the beige screen before
the screen that shows the two spys standing back to back.

KITKAT - Rooms are different colors for black spy
KKOKKL - Airplane room is invisible
KKNOKL - No music
SPYALL - White spy can't set traps or find items
SPYOOP - Play by yourself as white spy (No opponent)
SPYOOO - Play by yourself as black spy
SSSAAA - Slow motion
SPLPSP - Skating spys (Hold the " A " button)
SPYEEP - Spys can't move unless you press the " A " button
SZGPKL - Walk anywhere (White spy only)
SZAPKL - Run and walk anywhere (Both spys)
STUNTS - Black spy is confused (Com player)
STUNTG - Black spy seems to be on a different level (Com Player)
SPYOXX - Black spy can't set traps
SEPPOL - Win instantly. Select a level and you go straight to ending
sequence (White spy only)
AEPPOL - White spy is invisible. Note: To make it easier to control him,
Bring an item up by pressing the " B " button. Once shown, You can now see
where your going.
AELPOL - Black spy is invisible
SPYIEI - Both spys can get briefcase and all items. Note: This trick only works
if the spy thats carrying the briefcase has checked a piece of furniture that has
nothing in it. Once thats done, All items are duplicated.
GEIOOZ - Skip ending sequence. This takes you straight back to the level select
screen.
SPYVAN - White spy can't die by traps. Note: He can be killed by black spy or if
black spy happens to come in the room when white spy has just set off a trap.
SPY??? - Where ? is, Use random letters for different effects
AEPOOA - Walk through closed and trapped doors
POZXLU - White spy can't die. Note: Dieing animations or some other type of animation is still shown but differ with each new game. Example:At times he may have the giggle animations playing each time he sets a trap or gets killed by black spy.His life bar will still go down, but he never dies. Only if time runs out.
POTXLU - Turbo punch and jab for white spy
AOZXLU - Another white spy can't die code
YYYTET - Room bombs take longer to blow you up
YYYTNT - Room bombs blow you up quicker
SXUELUVK - Galoobs code for infinite time for white spy
SZVAYUVK - Galoobs code for infinite time for black spy
Combo codes: EEPOOA + EEAOOA - Many places to explore.Use with infinite time codes. Note: Stay in colored rooms to find other levels. Gray rooms are dead ends. Note 2: Com player may cause the game to freeze. You can play this by yourself by setting it to 2 player mode and just play the white spy. Or you can try the play by yourself as white spy code ( SPYOOP ). Note 3: Setting off spring traps may cause you to keep sailing through other rooms. Try also using the white spy can't die code ( AOZXLU ).
SXLULU - Shorter version of infinite time for white spy
EEGOOA - Black spy won't enter same room as white spy
ESGOOA - Neither spy can be seen by each other.
OTOEOT - Same as above, But i'm not sure which one works better
STUNTZ - Com spys mimics each other or player 1
AIIYAT - Com spy doesn't move until your in the same room as him
GGSPSP - Player 1 is on a different level
SPYPPK - Mixed levels. No matter which original level you pick, All are different
TEVZLYIE - White spy has deadly punch (Original GG Galoob code)
IIYPPK - More mixed levels. Note: Use with infinite time codes
VIGVOY - The word BLACK in the game is moved to bottom left

Super Contra:
ATVPPP - No enemy's most of the time except main enemy's.
Note: May not be able to pass some stages.Use with stage select codes below.Try experimenting with the 3rd letter to get a better effect.

PEATLI - Stage 2
ZEATLI - Stage 3
LEATLI - Stage 4
GEATLI - Stage 5
IEATLI - Stage 6
TEATLI - Stage 7
YEATLI - Stage 8
TVYPPP - Run fast (Forward only)
EYYAEA - Run faster (Forward only)
LLLXZO - Invincibility (Both players)
YXXTLI - Start with 40 men

Super Mario Bros 1:
Block world - PAAPIK
Maze world - NVAOGK
Mystery world - ZLAOKK
Under water world - PIAOKG
Most holes are gone - SVPOUU
Mario starts out swimming - NLTOGK
Hidden world - ASAENT
Cloud world - OLAOKK
Bonus world - NVPOKG
Hidden world 2 - ONZOGG
PLLOUG - New 1-1 world
VTPOXG - Another new 1-1 world
PLGOKG - New worlds.Press reset to start in a different world.I think this only works on the nes system.
PZZOOS or XZZOOS - ??? levels
PIGOAP - The ever so popular swim anywhere code
NNEOAP - Invincible most of the time
TTPPYA - Start with big mario.(Do not get power ups or get hit)
POPPYE - No music
PIGPOG - More traps and enemies in regular worlds
INAUTS - Skating mario
NOZOTS - No holes
NOPAPE - Darker colored worlds
PEGIEG - Mushrooms fly out of the boxes
PPPPAK - No clouds in the background
NOTOTS - Very long and different worlds
ZIPPEK - Strange new world
NNVEKN - Mario is a ghost
ZZZSSO or UATIUE - Invincibility(But not against fire and holes) Either one works.
(Note: As with most world codes a lot of them should be used with infinite time,jump high,and or walk through walls codes.

NNYVTA - Enemies fall off the screen/ground enemies only
NEYVTL - Worlds are not what they seem.Stray from bonus pipes.
IKGTEA - Most enemies are bullet bills
IKTPEA - Bonus pipes revealed. They look different than others
IVGPEA - Bonus rooms have hidden 1-up blocks in them./Might get stuck
IKTIKG - Non breakable blocks
ATAPIX - Always continue on last level you died on
SUEISA - Power up on enemies
AETLTK - Jump as high as you want
APZPUG - Weird levels
AGEPIE - Bonus pipe in 1-2 is weird
ZKGAEP - Weird mario and levels
SZTLTN - Infinite time/No timer
OGAOKK - Pipe level.Use with infinite time
SGAOKK - Mushroom level.Use with infinite time
PZASES - Big mario can climb invisible steps just by jumping from standing point.May get stuck in some areas.Push down to climb down
ZZZSOS - Running into or stomping ground enemies give you 1-ups.Turtles may sometimes kill or shrink you.Best to stomp them.
YZZLNY - Super speed
??LOKK - Start on world ??.Change 1rst,2nd or both letters.This code is like a master code for finding regular and mixed levels.some may seem familiar,But going down bonus pipes may take you to a higher or lower levels.Get the infinite time code ready.
PEAOKK - Cloudy background.Has no trees or mountains.Upper worlds only.
KISSON - Walk through anything going right only.Beware though,you can still get stuck because you can't walk through anything any other direction but right.
IXLTEA - Most enemies are turtles
TOYOTA - Turn off music
??TOAE - Music mod code.Change 1rst,2nd or both letters
TOAPAP - Timer resets when going in or out of pipes
TOAPPP - Vines come up when entering or coming out of pipes
AOAPPP - Temporary invincibility when entering or coming out of pipes
ASPAAA - Bright red worlds.Upper worlds only
GTTTTL - Another invincibility code.But not against fire
EAPEPP - Flashy item boxes
NNAOPO - Lot's of time and invincibility
?LGLLG - Run speed mod code.Change 1rst letter
PZZOAK - Play through whole game on repeated 3-1 world.Just like ??LOKK,Change Change 1rst,2nd or both letters.but try staying with every other letter starting with " A ".Example : A,P,Z,L etc.
GZZONK - Mixed up 3-1 world
NOGAPS - Gives all upper worlds the dungeon look
NOYAPS - Gives mario random looks
ISTOPI - More pipes and blocks
NAPSIN - Mario can shoot enemies even while he turns away from them
AEPTOY - Invisible mario.You gotta be good to use this one
IULLUG - Instant pop ups with power ups
IIIPIK - Weird world full of vines and bricks
AETLTK - Super high jump.If you stay in the air with this code,Time will stop.Push right to move through the game without any trouble.Don't panic if it seems he's not gonna land.Be patient,He'll be down
IIZPIK - Fences and small trees look in upper worlds
AAAPYK - Triangle backgrounds all levels
GIAPAK - All levels look like castles
EEZXON - Screen doesn't scroll forward
TTAPGS - Walk through pipes only.With walk through ??,You most like won't be able to end the stage with it on.Turn it off when you get to the end.
AUPPUL - No holes.Most are gone
PKAPLG - Some tiles are replaced with bonus cloud tiles.All levels
NUYXXN - Enemies run fast when you do
NUYUUS - Blocks disappear when hit.You can't get big mario with this code on
APZPAS - Level 1-1 and bonus rooms are different and much longer
ISAPAO - Random start time and longer invincibility.(Like starman gives you)
AAPEUX - Flashy Bonus boxes and coins
PAASKE - Getting power ups make you temporary invincible
ZAASKE - Getting a 1-up with big mario gives you fire mario
PAAULZ - Going down pipes restarts you to the beginning
AEPULX - Mario can be seen going in and out of pipes
AAAETV - Shadow mario
AAPEAV - Night time in most upper levels
LAAOAV + AETLTK - Many pipes to go down.Level will end
PPZLLT - Little mario can shoot fire.Collect fire flower and fire is doubled
AEYKAP - More enemies
AAAALT - Little mario looks like fire mario
IIZALT - Hot pink background
APZALT - Dark gray Bg
ZPZALT - Yellow Bg .Change 1rst and/or 2nd letter(s) for different effects
AAAELT - Black mario with pink bibs and hat
Note :Most codes you can change the first two letters for different effects.

LAAPPT - Able to go down all pipes
PEPEAS - Green Bg.Start game to see the effect
PAAAYT - Shadow mario with red suit
NEGATI - Pink blocks + Shadow enemies
APAPTI - Able to stand on clouds in Bg
GOPAOY - Collecting coins resets timer to nearest 100
AAANAE - Mario little or big jumps in the big mario pole sliding position
AAAPUN - Bonus pipe in 1-1 is a short cut 1-2
PAAUNY - Glitchy movement.All characters
ZIIPYK - Under water Bg.All levels
PUGLUG - Mushrooms stay still instead of moving away
SEASEE - Poisonous mushrooms
ZEASEE - Ultimate mushroom.Ok,i had to add this one.This code will turn you into big mario then fire mario.Plus while it is still moving,you can walk into it to collect 1-ups.Change 1rst and/or 2nd letter(S) for other effects.
EEASEO - Goombas turn into turtles when stomped.Change 1rst and/or 2nd letter(S) for other effects.
IAAPSY - First enemy in 1-1 becomes hammer brother.Change 1rst and/or 2nd letter(S) for other effects.
OEPVUV - Changes the left side of little jumping marios head to a different tile.Change 1rst and/or 2nd letter(S) for other effects.
VUSPAS - Longer levels
PLPYLX - Mario can jump to left side of screen and come out on the right side.
PPZYLE - Mario Travolta.Mario slides with his hands in his pockets
TAYOOK - Start with 900 seconds
ALIOOK - Another night time level(s) code
GIPOEK - All you have to do is swim to end and get the axe through the entire game.Easy to beat.No enemies.
AAAAAY - If you have the title version,The title will show when you start the game
PPPPPG - Bonus rooms have Backgrounds
AEPNNN - Bg music has a different pitch
NAPOLI - No objects except at the beginning.No holes either
KOOTTY - Bottom of goombas have different tiles
SLOPSY - Toadstool seen in 1rst level.Not sure about other levels
NASKAP - Frog hopping mario.Can't jump high with this code
GOLAEP - Mixed colors all levels.Tiles only
SAOPSY - Hammer brother halfway in 1rst level
SLOASY - Hidden timer and coin count.Not infinite time
SLOLSY - Mario lags walking to the right and enemies run fast toward you
SPYPYE - Most enemies are headless bouser
GOIPOZ - Level 1-1 is different toward the end
POGOII - Secret levels in bonus pipe in 1-1.Use inf time and high jump codes
GETOII - Most levels are different
IOZVLL - All moving things halted
ISZAEP - More colorful levels
PISSON - Better walkthrough anything moving right code
VETUGS - Wind mode.Mario seems to be pushed fast to the right
KPOTTP - Some enemies walk on air
AGAAAY - Start screen shows when you enter a new level and when going in or out of pipes
AAPPUN - Turtle in 1-1 becomes bullet bill.
TATOOS - Most bonus pipes have secret levels.Use with PIGOAP
PEAUPS - Ice mode Mario.Just like SMB3
TAZEIT - New look for whole game
TALEIT - Big mario stays the same when collecting fire flower.He still shoots fire
IKGPIK - Bonus pipes have really long or endless ?? dungeon levels
ZYGPAS - More bonus pipe levels
AEPEXX - Power up and coin boxes stay the same when hit.Also changes some enemies and sometimes the level
AIGPAS - Flag pole in 1-1 is gone.But go down the bonus pipe using high jump and inf time codes to find areas that most bonus pipes take you to.If you play this right,you can get to the end of the game quicker
PPPPAK - Clear blue sky no Bg.
APZPEA - Castles at the end are gone but you can still clear the stage
APGPEA - Mario goes behind the castles at the end
GAYLUG - On systems,Power up mushrooms become toadstool with temporary invincibility.On emulators it becomes distorted tiles with temporary invincibility
PAYLUG - Fire flower becomes a mushroom but it still gives fire mario
GAPLUG - Every 4 coins become a 1-up
AAAPON - Levels 1-1 with new enemies
AAAPXN - Bonu pipe in 1-1 becomes 1-1 underwater
GALLON - Conveyor belt mode.Enemies stay still
AAALEN - Mario Gonzales. Faster run
AAALKN - Enemies and power ups stay still
NGPOKG - Start on 1-2
TTPOZG - Another different 1-1 code
VTLNKA - Rains 200 point icons
TAGGAN - Mario Climbs a vine instead of fireworks at pole jump
TAGGAT - More fireworks at pole jump
PPZENT - When starting game or next level,The stage BG shows
TOYTON - Mario swims instead of sliding down the flag pole
AEYION - No pirrana plants in pipes
LUNLLT - Fire mario can only shoot twice
NSSIEE - When goombas are flattened, Quickly step on them again and they will move away like the turtle does when step on twice
DOPLEG - Another mushrooms stay still code
EAAEXX - Color modifier for [?] boxes and coins.
GKPLLT - Fire balls keep exploding on solid objects.(Walls,Pipes etc)
ZXLUUU - Different effects when hitting coin boxes and collecting them.Raining coins,Coin points scroll slowly scroll up the screen and then come up from the ground and keeps repeating through the stage
STINLY - Cycles through 2 or 3 music tones during each level
ZOPLLT - Ricocheting fire power.Still kills enemies while bouncing off walls,pipes and enemies
SPASSY - All bonus pipes lead to 4-1
ULGOKG + PIGOAP - Starts on Lvl 3-1 but when using pipes,poles or vines it can lead you to lower or higher levels.Can even see levels like 2-5,2-6 etc
PIISOP - Getting killed throws you to the right.(Old glitch in game)

SMB3 : (Super Mario Bros 3)
PEAUSA - All enemy's are gray (Change 1rst letter for different effects)
PAGUUP - Many enemies
IKGSIE - Some enemies fall up the screen.Some walk on air.
VALKIN - Enemies and mushrooms float on air
TIPTOE - Really strange music
XXAGSO - Invincible except against fire.You can't collect power-ups either
POUGIN - Ground enemies fall off the screen
POZGIN - Ground enemies don't move
YSAGIN - Object Modifier in tubes (Change the 1rst and 2nd letters)
AUPOKK - Colorful worlds

US Championship V'ball:
IPGXIX - Opponents miss often
ZPGXIX - Same as above, But sometimes works better
PAEPAY - Same as above, But works a lot better

End of list.

[adaml]

These are some cool looking codes. Can't wait to try a few of them (throwing frogs in Adventure Island!).

[Bite_Me2]

OK, I just tested that on FCEUx-2.1.2 and it doesn't work on the american rom I have.
However, It does work on the japanese version rom. Word of warning: FCEUx-2.1.2 seems to
crash a lot when adding codes. I really don't know if it's the codes, Maybe the 6 digit codes?
I use mostly 6 digit codes. To get FCEUx-2.1.2 to save the code, I add it, turn it off. Add another, turn it off.
Then reload the game with cheats added and repeat the process until I have all the codes I need. Then turn on
the ones needed. I think the codes did work on the actual system with the american version rom. Yea i still have
the sytem and GG cart, But they are both buried deep within my closet of boxes, So I'm not gonna go through the trouble to test them.

Test these on the japanese verion on a good emulator.
Tested on Takahashi Meijin No Boukenjima (J) and does work.

Heres an infinite energy code for ya

Infinite energy - PAVGYAVK

[Whipon]

8 letter codes are better

6 letter codes tends to be glitchy, because there's no compare value. They can also crash the game.
8 letter codes are better, because that way, only the required data is altered.
From Kodewerx Enhacklopedia:

The Game Genie, made by Galoob, is a cheat device, like the Pro Action Replay. However, unlike the Pro Action Replay, the Game Genie patches ROM, whereas the Pro Action Replay edits RAM. For example, a code may patch the address 0x8000 with the value 0x3F. This means that instead of modifying 0x8000 to be 0x3F, instead the Game Genie will watch for the game to access 0x8000, and whenever that happens it will send 0x3F to the location that requested 0x8000. This method, however, has one drawback. Because the 6502 only has a 16-bit program counter, only 64 KB of memory can be referenced at a time. To get around this limitation, the NES employs what is known as "bank switching". Basically, the NES references the entire ROM in 64 KB pages, and when necessary switches the page. What this means is that the assembly code referenced at our location 0x8000 is not always the same. It may refer to 0x8000 or 0x18000 or something else, but all will be patched. This can cause bugs, which is obviously undesirable. To combat this, Galoob provides an 8-character Game Genie code, which an extra byte called "compare". For this example, compare will be 0x5A. What the Game Genie will do is watch the address 0x8000 to be called. When it is called, if the value at that location is 0x5A, then 0x3F will be return. Otherwise, the Game Genie will allow the game to operate as intended.

So in the future I suggest you to use 8 letter codes only.

[Bite_Me2]

Update for A boy and his blob
These were made with FCEUX2.1.2

0098: ?? Jellybean / Vita blaster modifier
00 Licorice
01 Strawberry
02 Coconut
03 Cola
04 Cinnamon
05 Apple
06 Lime
07 Vanilla
08 Tangerine
09 Root beer
0A Honey
0B Ketchup
0C Punch
0D Orange
Other values just seem to change to change to vita blaster
With vita blaster in hand and vitamins collected, Try these values:
0E Vitamin A
0F Vitamin B
10 Vitamin C
?? This is where the fun begins.
Any value other than the ones above shoot out all
kinds of weird things. Some may freeze so be prepared
to make a save state often. Also, You have to have vitamins to
see the effects.Try these values:
A0 Shoots out heads of the bouncing worms found underground in boys world
A1 Body parts of worms
AB Shoots out slow moving vitamins. Unfortunately you can't collect them
AD Shoots out coconut ball
92 Shoots out popcorn
9A Shoots out a big blue ball / 3 if you have turbo button set
83 Shoots out a little blue ball / 3 if you have turbo button set
Theres a lot more. " Beware ", Some may use up your jelly bean supply.
Note: Some effects may not show unless your in an enemy screen.

00EE: ?? Stage / Area modifier. 00 to FF
Note: Walk to the next screen to change stage/area

Enjoy

[Bite_Me2]

Metal Gear 1 update
Fceux 2.1.2 Game Genie Raw Codes

Max & Infinite energy
006D: 10

Weapon in hand modifier
003B: ??
00 Nothing
01 Hand Gun
02 Mine
03 Explosive
04 Missile
05 M.Gun (Machine gun)
06 Grenade
07 Rocket L. (Rocket Launcher)

Note: 08 through 0F more or less freeze
Haven't tested above 0F and I'm not sure if this code gives
the silencer.
Note 2: Weapons shown are empty. So you have to find ammo trucks or rooms to refill
Note3: You don't even need to collect these in the inventory. Item will show as soon as
you turn the code on.

Equipment in hand modifier
003A: ??
00 Nothing
01 Card 1
02 Card 2
03 Card 3
04 Card 4
05 Card 5
06 Card 6
07 Card 7
08 Card 8
09 Cigarettes
0A Gas Mask
0B Binoculars
0C Cardboard ( Cardboard Box )
0D B.B. Suit ( Bomb Blast suit )
0E Uniform
0F Goggles
10 Iron Glove
11 Detector ( Metal Detector )
12 Body Armor
13 Antenna
14 Antidote
15 Flashlight
16 Compass
17 Oxygen Tank
18 Transmitter
19 Rations
1A to FF Untested

Rank modifier
006E: ??
00 No rank
01 One star
02 Two stars
03 Three stars
04 Four stars
Anything above that is just scrambled graphics

Max & Infinite Hand Gun ammo ( 255 ammo )
0079 FF

Max & Infinite Machine Gun ammo ( 255 ammo )
007D FF
.................................................. ....................

[Whipon]

Got these.