If you’re familiar with the NES, you’ll know how much more difficult video games used to be. They required a lot of practice and dedication to see through to the end.
That is, unless you have a Game Genie…
Back in the day I used to sit in front of my TV and create weird codes for my favorite NES games. The original Super Mario Bros. was most fun to create codes for.
Normally you’d use the Game Genie to give yourself more lives, infinite health, or infinite ammo. Not so normal uses (and what absolutely fascinated me) were to change level designs, alter the appearance of sprites, and cause other unexpected things to happen.
In the 1990s I would create and collect these strange codes. I had a Geocities website where I would post them to.
On this page I have reposted all the codes from my old website:
Super Mario Bros. 1 – NES
KAGKAL: unbelievably fast goombas
NNAIKE: all power ups and stars kill you
ILOVET: Mario’s mouth opens and closes like Pac-Man when he walks
VILLGI: Mario walks backwards
IONATX: Beetles replace goombas
TXEPAG: weird bricks, more fire flowers in some worlds (1-2)
STAGEO + SPEPNY: extra difficult (koopas have hammers etc…)
KOYNAN: no sound when Mario jumps
OPASSE: 1up mushrooms are now power ups
AKEOIP: weird level
VELITT: power ups disappear when hit, very few enemies
OVILLV: when you shoot a fireball, Mario makes the motion, but nothing comes out
GALLSS: when you hit a 10-coin block, only one coin comes out
SONETX: you control the demo
OKENGX: really weird
EOXNTI: weird sound FX – coins
AOXNTI: another weird sound for coins
PETEEE: no background, just foreground
TOSXUN: The screen scrolls along with you and part of it disappears. I can’t describe it.
EGENIE: Mario skates
XGONLY: Music starts and stops
AXEAXP: backgrounds change colors
IENTIA: 1UP mushroom floats in air
VXATSA: you see the enemies left of your screen when they’re really where they should be
OVEKSX: when you stomp enemies, they die but keep on moving
TVASNA: you appear invincible when you get a star, but you can still get hurt
USXEOX: when you hit a block, the block stays unharmed, but the thing inside still comes out.
ESTONE: The pipes you can go down look normal, the others look screwed.
XESTON: Mario looks like Luigi
VOIGEP: Enemies go through pipes, power ups fly to the left
PKONTX: When Mario faces left, he looks normal, when he faces right he looks weird and he can go behind background
VOULOS: Nothing comes out of any of the blocks
OPOISO: cannot be harmed by enemies but you can still stomp them
TOUSSA: You cannot stomp goombas or you’ll turn small or die
NOKEAG: Some power ups and stars give you 1ups, hitting red koopas makes weird things happen
OLUNTE: Appear big when you run
XANOPO: no time
TOANPX: Mario is crazy!
KEKAKE: no backgrounds and foreground
INTOAS: weird level, but it works
KYOUGK: Mario falls left instead of right on flagpole
TXEEON: time resets itself to 409 when it reaches 400
SEIING: when Mario hits a block, it becomes nighttime
STAPTO: no music
SEPUEG: when you hit the 1st mushroom block, coins fall from the sky, but you can’t get them
SPEPNG: weird level
POPPOK: No Clouds
PSTIOO: Every Enemy Hit Is Worth “1 UP”!!!
PZZONO: Go down any pipe
ZEEOPO: 50 extra seconds
IVYENO: all enemies look like Koopa
PINAAO: Move in pause
SSASSA: Always starman
YAZYIG: Random teleporting
PAZSNO: Always have fireballs
EATSSY: Walk through things
OOTAAA: strange effects
POTEXX: Things turn to 1/2 when hit
TIKOAO: Swim without water
EVYIVY: Everything bounces
OPKOPK: Scenery in sky!
IAGPSK: Warp to 4-1 /w/ no Lakitu (Yeah!)
PIGPEG: World with no enemies or elevators!
PAZSNO You can always throw fireballs
ZIGGYY: More enemies
SKIINO: Enemies don’t die
Super Mario Game Genie Code Resources:
For more codes, check out the following Super Mario Bros. Game Genie code pages:
Wayback Machine Archive of http://www.trsrockin.com/smb_glitches.html