Nintendo Entertainment System · cheat codes
Super Mario Bros. / Duck Hunt cheats & codes
178 codes for Super Mario Bros. / Duck Hunt on the Nintendo Entertainment System. The most useful 100 are listed below.
Super Mario Bros. / Duck Hunt Other codes
How to use: Additional codes collected by the community. Enter them through your emulator's cheat menu, choosing the format that matches your emulator.
| Effect | Code |
|---|---|
| Infinite Ammo | 00BA:03 |
| It rains "200 point" icons | VTLNKA |
| Timer counts up instead of down!! | VVAANY |
| Jump as high as you want! Works while standing, running, or turbo running! | AETLTK |
| Enemies can go thru pipes, walls, and blocks! Mario as usual can't go thru pipes, walls, or blocks. | PIATYP |
| Mario can jump higher when walking, running, or turbo running! Also, he jumps further only when normal running. | AEAENT |
| Once you turn into Fire Mario, you will always be able to shoot fireballs, even if you turn small again until you die. | PAZSKO |
| The pipes you can't go down are upside-down, the pipes you can go down are normal. | ANTOSA |
| Take no damage from most enemies! | PAASNO |
| Similar to "Take no damage from most enemies!" code | PAZSSO |
| "Level Select" code!! | YSAOPE
YEAOZA |
| Mario can swim everywhere, and you start some worlds about 1/2 way thru | AAGOPO |
| Time starts at 900 instead of 400 | VGYOKK |
| Start with 400 more seconds, and invincibility for the first 10 seconds. | GUAOPO |
| Mario skates like gumby | VTTNYA |
| Opens route to minus world! at end of 1-2 | LEAOGK |
| Mario always walks crouched down | VGANYA |
| Mario turns big when he walks | VTLNYA |
| Mario walks right thru enemies | UATIUA |
| Everything is invisible except mario & enemies | OKGASA |
| Mario starts out swimming | NLTOGK |
| 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 |
| Most enemies are invisible, but they die when you touch them. | KEATPE |
| Take no damage from touching enemies! | UAYIUA |
| Items that were worth 1,000 points, are now worth 1,000,000,000 points!! | NYTELN |
| Time starts at 150 instead of 400 plus about 30 seconds of invincibility at the start of every life | YNAOPO |
| Time starts with one extra minute 460 instead of 400 | LEAOPO |
| Time starts at 600 instead of 400 plus about 10 seconds of invincibility at the start of every life | LXAOPP |
| Time starts at 995 instead of 400 plus about 20 seconds of invincibility at the start of every life | GVAOPP |
| Most enemies are gone | TSLIIT |
| All enemies are gone! | TSPIIT |
| Little mario turns big when he jumps | VGANZA |
| Big mario turns little when he jumps | VGANPA |
| When little mario walks, he turns big, little, big, little, big, little, etc... | VTLNGA |
| Mario has a seizure when he walks his legs move much faster than he's walking. | VTYNYA |
| Play as Game Boy mario (everything is black & white) | NEPELA |
| When mario jumps while running, his little legs start running in mid air. | VGANAA |
| Everything is offset by about 2 inches | NTPOLE |
| Mario turns into the invisible man | ZSYENT |
| Play at night | ASTETE |
| Invincibility! Let an enemy touch you and see what happens. | SSASSA |
| Most enemies are frozen! | AALLEY |
| Swim without water (you're always swimming) | PIGOAP |
| Super mega jump, standing start only | AETLIK |
| Mario has semi lunar descent | GETLYG |
| Slow-motion, plus other neat stuff | OVAAAE |
| No enemies, or in different places | SYLOKG |
| Mario has variable jump heights. Sometimes he jumps high, sometimes low. | YETLYG |
| Similar to above code | PETLYG |
| Mario swims in some worlds (and different enemies) | NTLOGK |
| Mario can't shoot | EAZLIT |
| Mario walks past castle at end of 1-1 and keeps on going forever | AITOSA |
| All castles are missing, but game still plays normally. | STPONE |
| After the first pipe, mario keeps on going forever (no obsticles) | NTPOLS |
| Enemies follow you! | GNATUE |
| Invincibility! Mario walks right thru enemies | UATIUE |
| Mario can float for a very long time | PAZULG |
| X-ray vision bizarre. Shows where hidden blocks are. | STPENT |
| Enemies that are up on blocks don't fall down and other oddities | TEYVPA |
| Infinite Ammo | SZNIPPVG |
| Always Hit The Duck In Single-Duck Mode | ELXSLZEI |
| Always Advance To The Next Round (Miss All Of The Targets To Get The Perfect Bonus) | ALSIPLEI |
| Get The Perfect Bonus For Hitting At Least 10 Targets | ZEUIYZAE |
| Always Get The Perfect Bonus | AASIAUZA
ALSIPLEI |
| Get The Perfect Bonus Only For Hitting 20 Targets | GPSIAUZA
ALSIPLEI |
| Game D enabled | GEOKTPLA |
| Always Clear The Level In Duck Hunt | ZAOKNTAA |
| Always Clear The Level In Clay Shooting | ZAKIPTAA |
| Duck Won't Fly Away | SZVKKZVG |
| Ducks Fly Away Faster - Game A | EISGNZEY |
| Ducks Never Fly Away - Game A | IAVKKZVG |
| Hit Anywhere | AAXSGZSY |
| Mario Modifier | 0754:00
0756:00 |
| Invincible (Walk Through Enemies) | 079E:06 |
| Invincible (Kill Enemies On Contact) | 079F:18 |
| Infinite Time | 0787:0C |
| Enable Hard Mode | 07FC:01 |
| Mario Always Moves As If He Has Gotten A Running Start | 0700:1C |
| Coins Modifier (Tens Digit) | 07ED:00 |
| Coins Modifier (Seconds Digit) | 07EE:00 |
| Level Text Modifier (i.e. 1-1, 1-2) | 075C:00 |
| Max High Score (Tens) | 07DC:09 |
| Max High Score (Hundreds) | 07DB:09 |
| Max High Score (Thousands) | 07DA:09 |
| Max High Score (Millions) | 07D9:09 |
| Max High Score (Billions) | 07D8:09 |
| Max High Score (Trillions) | 07D7:09 |
| Round Modifier | 00C1:00 |
| Max High Score (Ones) | 0319:09 |
| Max High Score (Tens) | 0318:09 |
| Max High Score (Hundreds) | 0317:09 |
| Max High Score (Thousands) | 0316:09 |
| Max High Score (Ten Thousands) | 0315:09 |
| Max High Score (Hundred Thousands) | 0314:09 |
| Disable Audio | ENSYLZEI |
| Always Run | EYKLLIEI |
| Always Walk Slowly (Right Direction) | EYVUAIEI |
| Walk On Air (After Jumping) | EYESNIEI |
| Walk On Air After Jumping (Alt) | ESXIUYEY |
| Walk Thru Objects (Right Direction) | ENOSOIEI |
Showing 100 of 178 codes.
Using cheats today
Original cheat devices like the Game Genie, Action Replay and GameShark still turn up second-hand and work with original cartridges. Most modern emulators also have a built-in cheat menu that accepts these formats, so you can toggle codes on and off without extra hardware. Codes can differ between regional releases and revisions of a game; if one doesn't work, try the code list for another version.
Cheats can corrupt save files in rare cases, so back up your saves before experimenting.
Super Mario Bros. / Duck Hunt walkthroughs & guides
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Cheat codes are from the libretro-database community collection, used under CC BY-SA 4.0; the code tables on this page are shared under the same license. Codes are provided as-is: some may not work on every version of the game.