Super Mario Bros. + Duck Hunt nes (USA)

"Level Select" code!!/Note by Tony Hedstrom

YSAOPE
YEAOZA

After the first pipe, mario keeps on going forever (no obsticles) by Tony Hedstrom

NTPOLS

Air Bubbles Come Out Of Mario/Note by Mezmorize

EYNLPTEI

All ? Boxes Give 1ups/Note by Mezmorize

ESNUUIEY

All Blocks Give Coins/Note by Mezmorize

EYULOTEI

All castles are missing, but game still plays normally. by Tony Hedstrom

STPONE

All enemies are gone!/Note by Tony Hedstrom

TSPIIT

Always Run/Note by Mezmorize

EYKLLIEI

Automatically Jump On Enemies/Note by Mezmorize

EYOIOPEI

Automatically Jump On Enemies (Alt)/Note by Mezmorize

ASNSSAEI

Big mario turns little when he jumps by Tony Hedstrom

VGANPA

Can Continue Jumping On A Squished Enemy (alt)/Note by Mezmorize

ESUISAEY

Can Continue Jumping On A Squished Enemy (Easy 1ups)/Note by Mezmorize

ESXSOAEY

Change Stage Layout/Note by Mezmorize

ENVOLIEI

Demo Mode/Note by Mezmorize

PENEGZAA

Disable Audio/Note by Mezmorize

ENSYLZEI

Double Mushroom Enemies Are Super Fast/Note by Mezmorize

EYKKALEI

Double Mushroom Enemies Are The Black Beetles/Note by Mezmorize

EIXKLYEY

Enemies And Powerups Can't Move/Note by Mezmorize

EIOTIPEY

Enemies Are Powerups/Note by Mezmorize

ANEISAEI

Enemies Are Toad/Note by Mezmorize

ENUTKAEI

Enemies can go thru pipes, walls, and blocks! Mario as usual can't go thru pipes, walls, or blocks./Note by Tony Hedstrom

PIATYP

Enemies Can't Move/Note by Mezmorize

ASNKSAEI

Enemies Die When They Touch You/Note by Mezmorize

ESESSAEY

Enemies Don't Die When You Jump On Them And Powerups Don't Fall/Note by Mezmorize

ENVIOYEI

Enemies Don't Die When You Jump On Them Enemies Can Walk Thru Objects And Powerups Fall Down Fast/Note by Mezmorize

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. by Tony Hedstrom

KEATZE

Enemies Fall Thru The Floor And Powerups Don't Fall/Note by Mezmorize

EYNKSZEI

Enemies follow you!/Note by Tony Hedstrom

GNATUE

Enemies that are up on blocks don't fall down and other oddities by Tony Hedstrom

TEYVPA

Enemies That Fall From One Platform To A Lower One Die/Note by Mezmorize

ENEVTAEI

Everything is invisible except mario & enemies by Tony Hedstrom

OKGASA

Everything is offset by about 2 inches by Tony Hedstrom

NTPOLE

Falling Into Pits Takes You Inside Of Pipes (But You Can Get Stuck)/Note by Mezmorize

ENOLZPEI

Get The Perfect Bonus For Hitting At Least 10 Targets/Note by Cheatmaster

ZEUIYZAE
??USP?UU

Get The Perfect Bonus Only For Hitting 20 Targets/Note by Cheatmaster

GPSIAUZA
ALSIPLEI

Going Down The Very First Pipe In The Game Takes You To A Far Away Land by Mezmorize

EYUKIZEI

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 by Tony Hedstrom

ISAENT

Infinite Time/Note by Mezmorize

EISLZYEY

Instantly Go Down Pipes/Note by Mezmorize

EYEUTZEI

Invincibility! Let an enemy touch you and see what happens. by Tony Hedstrom

SSASSA

Invincibility! Mario walks right thru enemies/Note by Tony Hedstrom

UATIUE

Invulnerability (Walk Thru Enemies)/Note by Mezmorize

ENOSSAEI

It rains "200 point" icons by Tony Hedstrom

VTLNKA

Items that were worth 1,000 points, are now worth 1,000,000,000 points!!/Note by Tony Hedstrom

NYTELN

Jump as high as you want! Works while standing, running, or turbo running!/Note by Tony Hedstrom

AETLTK

Jump Thru Blocks/Note by Mezmorize

ESUINGEY

Jumping On An Enemy Gives You Points, But Does Not Kill Them/Note by Mezmorize

ESETGAEY

Jumping On Enemies Are Worth 1000 Points/Note by Mezmorize

ENOIKPEI

Jumping On Enemies Causes Them To Instantly Disappear/Note by Mezmorize

ENVKSZEI

Little mario turns big when he jumps by Tony Hedstrom

VGANZA

Little Mario Wears Fire Suit, Fire Mario Wears Normal Suit/Note by Mezmorize

EYEAZTEI

Look Like Luigi Until You Get Firepower/Note by Mezmorize

ESNEPIEY

Mario always walks crouched down by Tony Hedstrom

VGANYA

Mario can float for a very long time/Note by Tony Hedstrom

PAZULG

Mario can jump higher when walking, running, or turbo running! Also, he jumps further only when normal running. by Tony Hedstrom

AEAENT

Mario can swim everywhere, and you start some worlds about 1/2 way thru/Note by Tony Hedstrom

AAGOPO

Mario can't shoot by Tony Hedstrom

EAZLIT

Mario has a seizure when he walks his legs move much faster than he's walking. by Tony Hedstrom

VTYNYA

Mario has semi lunar descent/Note by Tony Hedstrom

GETLYG

Mario has variable jump heights. Sometimes he jumps high, sometimes low. by Tony Hedstrom

YETLYG

Mario skates like gumby by Tony Hedstrom

VTTNYA

Mario starts out swimming by Tony Hedstrom

NLTOGK

Mario swims in some worlds (and different enemies) by Tony Hedstrom

NTLOGK

Mario turns big when he walks by Tony Hedstrom

VTLNYA

Mario turns into the invisible man by Tony Hedstrom

ZSNENT

Mario walks past castle at end of 1-1 and keeps on going forever/Note by Tony Hedstrom

AITOSA

Mario walks right thru enemies by Tony Hedstrom

UATIUA

Most enemies are frozen! by Tony Hedstrom

AALLEY

Most enemies are gone by Tony Hedstrom

TSLIIT

Most enemies are invisible, but they die when you touch them. by Tony Hedstrom

KEATPE

No enemies, or in different places/Note by Tony Hedstrom

SYLOKG

Once you turn into Fire Mario, you will always be able to shoot fireballs, even if you turn small again until you die./Note by Tony Hedstrom

PAZSKO

Opens route to minus world! at end of 1-2 by Tony Hedstrom

LEAOGK

Pipes, Trees, Shrubs and Hills Are Red Instead Of Green/Note by Mezmorize

EYKEATEI

Play as Game Boy mario (everything is black & white) by Tony Hedstrom

NEPELA

Play at night by Tony Hedstrom

ASTETE

Shoot 2 Fireballs At Once/Note by Mezmorize

EYULLTEI

Similar to "Take no damage from most enemies!" code by Tony Hedstrom

PAZSSO

Similar to above code by Tony Hedstrom

PETLYG

Single Mushroom Enemies Are The Black Beetles/Note by Mezmorize

EIEGGZEY

Slow-motion, plus other neat stuff by Tony Hedstrom

OVAAAE

Squished Enemies Can Get Back Up/Note by Mezmorize

ENNGUZEI

Squished Mushrooms Can Be Kicked Like Turtle Shells/Note by Mezmorize

ANSIOAEY

Start Off As Big Mario And Mushrooms Make You Small (Visually Only)/Note by Mezmorize

ESOYGAEY

Start with 400 more seconds, and invincibility for the first 10 seconds. by Tony Hedstrom

GUAOPO

Super mega jump, standing start only/Note by Tony Hedstrom

AETLIK

Swim without water (you're always swimming) by Tony Hedstrom

PIGOAP

Take no damage from most enemies!/Note by Tony Hedstrom

PAASNO

Take no damage from touching enemies! by Tony Hedstrom

UAYIUA

The pipes you can't go down are upside-down, the pipes you can go down are normal./Note by Tony Hedstrom

ANTOSA

The Very First Pipe In The Game Takes You To World 3-1/Note by Mezmorize

EIESNYEY

Time starts at 150 instead of 400 plus about 30 seconds of invincibility at the start of every life by Tony Hedstrom

YNAOPO

Time starts at 600 instead of 400 plus about 10 seconds of invincibility at the start of every life by Tony Hedstrom

LXAOPP

Time starts at 900 instead of 400 by Tony Hedstrom

VGYOKK

Time starts at 995 instead of 400 plus about 20 seconds of invincibility at the start of every life by Tony Hedstrom

GVAOPP

Time starts with one extra minute 460 instead of 400 by Tony Hedstrom

LEAOPO

Timer counts up instead of down!!/Note by Tony Hedstrom

VVAANY

Turtles Are Toad/Note by Mezmorize

EYOTEZEI

Vines Grow Inside And Outside Pipes After Going Thru Them/Note by Mezmorize

ESOOZPEY

Walk Thru Enemies And Powerups/Note by Mezmorize

EYVVTZEI

Walk Thru Enemies And Powerups (Alt)/Note by Mezmorize

EYVIEAEI

Walk Thru Objects (Right Direction)/Note by Mezmorize

ENOSOIEI

Walk Thru Walls, Pipes Etc./Note by Mezmorize

ESOSNIEY

When little mario walks, he turns big, little, big, little, big, little, etc... by Tony Hedstrom

VTLNGA

When mario jumps while running, his little legs start running in mid air. by Tony Hedstrom

VGANAA

World Select/Note by Mezmorize

EIVEYZEY

X-ray vision bizarre. Shows where hidden blocks are. by Tony Hedstrom

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. by Tony Hedstrom

VTPOZI

You can position Mario anywhere on the screen even when he's moving by holding down the "A" button on controller #2. by Tony Hedstrom

GSAENT

You Die If You're Hit Once/Note by Mezmorize

EIUIKPEY