Super Mario Bros + Duck Hunt - Misc Game Genie Codes (USA)
This page contains the Game Genie codes I have for Super Mario Bros + Duck Hunt (USA), a game for the original NES (Nintendo Entertainment System). If you're playing with an emulator you'll typically be able to put these codes into the program directly through a built in option. Any of you who are old school and playing on a physical console, you'll have to purchase a physical Game Genie cheat device to use these codes.
If you don't see the code you want on this page, I recommend you return to my Super Mario Bros + Duck Hunt Guides Index and choose a different section.
Note: Many of the codes on this page also work for Super Mario Bros + Duck Hunt + World Class Track Meet.
Always Walk Slowly: EIULPIEY
Always Walk Slowly (Right Direction): EYVUAIEI
Jump Like You're Swimming: ENNVSYEI
Jump Like Your Crouching: EYEYGAEI
Swim On Land: EYSPAPEI
Walk On Air (After Jumping): EYESNIEI
Turn this code off to drop back down
Walk On Air After Jumping (Alt): ESXIUYEY
Turn this code off to drop back down
Walk Thru Enemies: EYOIVPEI
Walk Thru Enemies (alt): EYXSNPEI
Black Background Is Blue Sky: EYOEGTEI
Blocks Turn Invisible After Hitting Them: ESVLETEY
Breakable Blocks Are Clouds: EIUPKZEY
Clouds, Trees, Fences In Underground Stages; Clear Skys On Stages That Normally Have Clouds, Trees, Fences: EIOPPGEY
The Ground Is Clouds: ESEPGGEY
Fireworks 1 Code: D304?06:??
Replaces the Fireworks that normally trigger at 6
Fireworks 2 Code: D2FE:03:??
Replaces the Fireworks that normally trigger at 3
Fireworks 3 Code: D2F8?01:??
Replaces the Fireworks that normally trigger at 1
1-up Blocks Always Available on (#-1 Worlds) : SZEOEUSE
Always Walkbackwards: OXEYZZSX
Mario And Enemies Wont Turn Around: OUEZZSX
Air Bubbles Come Out Of Mario: EYNLPTEI
All castles are missing, but game still plays normally: STPONE
Big mario turns little when he jumps: VGANPA
Can Continue Jumping On A Squished Enemy (alt): ESUISAEY
Can Continue Jumping On A Squished Enemy (Easy 1ups): ESXSOAEY
Change Stage Layout: ENVOLIEI
Demo Mode: PENEGZAA
Press Start on Title Screen to control the Demo Player
Disable Audio: ENSYLZEI
Enemies Are Toad: ENUTKAEI
Enemies can go thru pipes, walls, and blocks! Mario as usual can't go thru pipes, walls, or blocks: PIATYP
Enemies Can't Move: ASNKSAEI
Enemies Don't Die When You Jump On Them Enemies Can Walk Thru Objects And Powerups Fall Down Fast: EYNTGAEI
Enemies don't die when you jump on them, so by jumping on the same one over and over, you get several 1 up's. But shooting them does kill them: KEATZE
Enemies Fall Thru The Floor And Powerups Don't Fall: EYNKSZEI
Enemies follow you!: GNATUE
Best when paired with SSASSA Code
Enemies that are up on blocks don't fall down and other oddities: TEYVPA
Everything is invisible except mario & enemies: OKGASA
Everything is offset by about 2 inches: NTPOLE
Falling Into Pits Takes You Inside Of Pipes (But You Can Get Stuck): ENOLZPEI
Going Down The Very First Pipe In The Game Takes You To A Far Away Land: EYUKIZEI
Hitting mushroom boxes or 1 UP boxes, King Koopa comes out instead: IZKUXKTX
If you press the "A" button, you can position Mario anywhere on the screen. If you don't press the "A" button, the screen won't scroll: ISAENT
It rains "200 point" icons: VTLNKA
Items Are Now worth 6x More: NYTELN
Jump as high as you want! Works while standing, running, or turbo running!: AETLTK
Jumping On An Enemy Gives You Points, But Does Not Kill Them: ESETGAEY
Jumping On Enemies Are Worth 1000 Points: ENOIKPEI
Jumping On Enemies Causes Them To Instantly Disappear: ENVKSZEI
Little mario turns big when he jumps: VGANZA
Little Mario Wears Fire Suit, Fire Mario Wears Normal Suit: EYEAZTEI
Look Like Luigi Until You Get Firepower: ESNEPIEY
Mario can't shoot: EAZLIT
Mario constantly changes colors: EIKZKYEY
Mario has a seizure when he walks his legs move much faster than he's walking: VTYNYA
Mario has semi lunar descent: GETLYG
When you jump you'll float back down to the ground
Mario has variable jump heights. Sometimes he jumps high, sometimes low: YETLYG
Mario skates like gumby: VTTNYA
Mario starts out swimming: NLTOGK
Mario swims in some worlds (and different enemies): NTLOGK
Mario turns big when he walks: VTLNYA
Mario turns into the invisible man: ZSNENT
Mario walks past castle at end of 1-1 and keeps on going forever: AITOSA
Mario walks right thru enemies: UATIUA
Most enemies are invisible, but they die when you touch them: KEATPE
No enemies, or in different places: SYLOKG
Use with PIGOAP or AETLTK to help get past some levels, like 1-2
Opens route to minus world! at end of 1-2: LEAOGK
Pipes, Trees, Shrubs and Hills Are Red Instead Of Green: EYKEATEI
Play as Game Boy mario (everything is black & white): NEPELA
Play as Luigi: GUNAYILS
Play at night: ASTETE
Single Mushroom Enemies Are The Black Beetles: EIEGGZEY
Skip Current Lives Scene: ENKAATEI
Slow-motion, plus other neat stuff: OVAAAE
Squished Enemies Can Get Back Up: ENNGUZEI
Squished Mushrooms Can Be Kicked Like Turtle Shells: ANSIOAEY
Start Off As Big Mario And Mushrooms Make You Small (Visually Only): ESOYGAEY
Swim without water (you're always swimming): PIGOAP
When little mario walks, he turns big, little, big, little, big, little, etc..: VTLNGA
When mario jumps while running, his little legs start running in mid air: VGANAA
X-ray vision bizarre. Shows where hidden blocks are: STPENT
You can jump over the castle at the end of world 1-1 and keep on going. Also, going down tubes does weird things: VTPOZI
You can position Mario anywhere on the screen even when he's moving by holding down the "A" button on controller #2: GSAENT
You Die If You're Hit Once: EIUIKPEY