Super Mario Bros. Classic
Nintendo Entertainment System · cheat codes
Karnov cheats & codes
66 codes for Karnov on the Nintendo Entertainment System, including Game Genie codes.
Karnov Game Genie codes
How to use: Galoob's Game Genie plugged in between the console and the cartridge. Type the codes in on its start-up screen, then press Start. In emulators, add them through the cheat menu and choose the Game Genie format if asked.
| Effect | Code |
|---|---|
| Infinite Lives | SXKISXVK |
| Freeze Timer | GZVZNIVG |
| Gain 3 Of Most Items | LEEGOYPA |
| Never Lose Most Items | AEOKSYPA |
| Start On Stage 2 | PAUSAAAA |
| Start On Stage 3 | ZAUSAAAA |
| Start On Stage 4 | LAUSAAAA |
| Start On Stage 5 | GAUSAAAA |
| Start On Stage 6 | IAUSAAAA |
| Start On Stage 7 | TAUSAAAA |
| Start On Stage 8 | YAUSAAAA |
| Start On Stage 9 | AAUSAAAE |
| Start With 1 Life | AAOSIAZA
AESIVTZA |
| Start With 6 Lives | IAOSIAZA
IESIVTZA |
| Start With 9 Lives | AAOSIAZE
AESIVTZE |
| Pick Up 97 Of Most Items | NOEGOYPA |
| The Platforms Look Messed Up | VALUEE |
| You Get Pushed Through The Level And It Repeats Forever | UUUUEE |
| You Float To The Top Of The Level And You Can't Get Back Down | STUNTS |
| Hold Down The A Button While Jumping And You Can Float Until You Release The A Button | NTSNTS |
| Jump Once And You Can Fly Anywhere In The First Level | PPPNTS |
| "Double Jump" (Jump Twice As High Than Usual) | ZXLNTS |
| Game Starts But You Can't Move | IIISTV |
| Things Fly By | POZSTV |
| Get Infinite Of Most Things | NNEGOYPA |
| Time Goes Up, Then Stops | YAVZNIVG |
| Start With Lots Of Lives | EYOSIAZE
ENSIVTZE |
| Invincible | SZVKNLSA
SXEGXLSA
SZNGULSA |
Karnov 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 |
|---|---|
| Pick Up 97 Of Most Items | NOEGOYPA |
| Double Jump [Jump Twice As High Than Usual] | ZXLNTS |
| Get Infinite Of Most Things | NNEGOYPA |
| Start With Lots Of Lives | EYOSIAZE
ENSIVTZE |
| Invincible | SZVKNLSA
SXEGXLSA
SZNGULSA |
| Invincibility After 1st Hit | 0069:FA |
| Infinite lives | SXKISXVK |
| Freeze timer | GZVZNIVG |
| Gain 3 of most items | LEEGOYPA |
| Never lose most items | AEOKSYPA |
| Start with 1 life | AAOSIAZA
AESIVTZA |
| Start with 6 lives | IAOSIAZA
IESIVTZA |
| Start with 9 lives | AAOSIAZE
AESIVTZE |
| Start on stage 2 | PAUSAAAA |
| Start on stage 3 | ZAUSAAAA |
| Start on stage 4 | LAUSAAAA |
| Start on stage 5 | GAUSAAAA |
| Start on stage 6 | IAUSAAAA |
| Start on stage 7 | TAUSAAAA |
| Start on stage 8 | YAUSAAAA |
| Start on stage 9 | AAUSAAAE |
| Infinite Time | SZVZNIVG |
| Invincibility | SXEGXLSA
APVKULAL |
| Invincibility After First Hit | ASENYZEI |
| Shot / Jump Modifier | 0065:01 |
| Jump to Walk On Air | 008B:02 |
| Start With Items Available | 008F:FF
0090:01 |
| Stop Timer | 0094:AD |
| Boss 1HK | 0655:10 |
| Infinite Lives | 040B:09 |
| Have 99 "K"'s | 00BA:99 |
| Infinite Time | 0094:A7 |
| Always Have Double Flame Shot | 0065:01 |
| Moon Jump | 0064:6C |
| Stage Modifier | 0061:00 |
| Never Turn Grey | 0034:28
0035:16 |
| Grey Rock Enemies Never Throw Boulders | 0660:00
0669:58 |
| Hit Anywhere | OXSGOGEU
AESKUKPA
SZKKNISP |
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.
Karnov walkthroughs & guides
More NES games with cheats
Super Mario Bros. 3 Classic
Super Mario Bros. 2 Classic
Ice Climber Classic Co-op
Castlevania III: Dracula's Curse Classic
Chip 'n Dale Rescue Rangers Classic Co-op
Back to Karnov: is it worth playing?
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.