Nintendo Entertainment System · cheat codes
Fester's Quest cheats & codes
99 codes for Fester's Quest on the Nintendo Entertainment System, including Game Genie codes.
Fester's Quest 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 |
|---|---|
| Walk Through Some Walls | PEGLEG |
| Virtual Intangibility | PEGKEG |
| Invincibility | AYIPOG |
| You Have No Gun | SOSKKK |
| Messed Up Graphics | LUUKKK |
| Makes The Game A Little Easier | OSSKKK |
| Moonwalking | PIPKKK |
| Strange Music And Sound Effects | KIKEAG |
| Different Colors | IPEKAG |
| Weird Graphics When You Fire Weapon | KESTEA |
| No Enemies (Doesn't Work Inside Buildings) | OPIETA |
| Infinite Health! | XVEPUKVK |
| Start With The Strongest Gun! | AAKXAYPE |
| Start With The Strongest Whip! | GAKXIYAA |
| Red Gun Icons Don't Decrease Gun Power | XVXOUEVK |
| Red Gun Icons Increase Gun Power (Instead of Decreasing) | VVXOUEVK |
| Red Whip Icons Don't Decrease Whip Power | XVKOOEVK |
| Start A New Game With 50 Nooses, 50 Vice Grips, 50 Potions, 50 Invisible Potions, 50 Missiles, And 50 T.N.T's. | LLSXGYAA |
| Start A New Game With 99 Nooses, 99 Vice Grips, 99 Potions, 99 Invisible Potions, 99 Missiles, And 99 T.N.T's | GTSXGYAA |
| Infinite TNT! (Once You Get Them) | SZNIYOVK |
| Infinite Vice Grips! (Once You Get Them) | SXSITEVK |
| Infinite Missiles! (Once You Get Them) | SZVVXUVK |
| Infinite Potions! (Once You Get Them) | SXVSLEVK |
| Infinite Invisible Potions! (Once You Get Them) | SZEIYOVK |
| Infinite Nooses! (Once You Get Them) | SXUITEVK |
| Infinite Money! | SZUSYOSE |
| Hot Dogs Only Cost $1 (Instead of $5) | PAUSTPIA |
| Hot Dogs Cost $10 (Instead of $5) | ZAUSTPIE |
| Start A New Game With 4 Energy Blocks (Instead of 2! - May Cause Problems Later On In The Game) | GASZIYZA |
| Infinite Health! (Alternate Code) | SXEPUKVK |
| Start With 1 Health Bar | PASZIYZA |
| Start With 3 Health Bars | LASZIYZA |
| Invincibility | OZVPEGSX |
| Infinite All Items | SPOTTXSU |
| Start With Whip | PAKXIYAA |
| Start With Chain Whip | ZAKXIYAA |
| Start With Chain Whip With Spike Tip | LAKXIYAA |
Fester's Quest 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 |
|---|---|
| Invincibility On | 04F8:C0 |
| Invincibility Off | 04F8:01 |
| Always Level 8 Gun | 04E7:08 |
| Always Level 4 Whip | 04E8:04 |
| Infinite 98 Bulbs | 015C:63 |
| Infinite 98 Keys | 015D:63 |
| Infinite 98 Nooses | 015E:63 |
| Infinite 98 Vice Grips | 015F:63 |
| Infinite 98 Potions | 0160:63 |
| Infinite 98 Invisibles | 0161:63 |
| Infinite 98 Money | 0162:63 |
| Infinite 98 Missiles | 0163:63 |
| Infinite 98 T.N.T. | 0164:63 |
| Infinite health | XVEPUKVK |
| Infinite Health [Alternate Code] | SXEPUKVK |
| Infinite Money | SZUSYOSE |
| Infinite TNT [Once You Get Them] | SZNIYOVK |
| Infinite Vice Grips [Once You Get Them] | SXSITEVK |
| Infinite Missiles [Once You Get Them] | SZVVXUVK |
| Infinite Potions [Once You Get Them] | SXVSLEVK |
| Infinite Invisible Potions! [Once You Get Them] | SZEIYOVK |
| Infinite Nooses [Once You Get Them] | SXUITEVK |
| Start A New Game With 50 Nooses, 50 Vice Grips, 50 | LLSXGYAA |
| Start A New Game With 99 Nooses, 99 Vice Grips, 99 | GTSXGYAA |
| Start A New Game With 4 Energy Blocks [Instead of | GASZIYZA |
| Hot Dogs Only Cost $1 [Instead of $5] | PAUSTPIA |
| Hot Dogs Cost $10 [Instead of $5] | ZAUSTPIE |
| Start with the strongest gun | AAKXAYPE |
| Start with the strongest whip | GAKXIYAA |
| Red gun icons don't decrease gun power | XVXOUEVK |
| Red gun icons increase gun power instead of decreasing | VVXOUEVK |
| Red whip icons don't decrease whip power | XVKOOEVK |
| Invincibility | OZVPEGSX |
| Start With Chain Whip With Spike Tip | LAKXIYAA |
| Start With 1 Health Bar | PASZIYZA |
| Start With 3 Health Bars | LASZIYZA |
| Start With Whip | PAKXIYAA |
| Start With Chain Whip | ZAKXIYAA |
| Infinite All Items | SPOTTXSU |
| Virtual Intangibility | PEGKEG |
| Invincibility | AYIPOG |
| You Have No Gun | SOIKKK |
| Makes The Game A Little Easier | OSIKKK |
| Moonwalking | PIPKKK |
| Strange Music And Sound Effects | KIGEAG |
| Different Colors | IPAKAG |
| No Enemies [Doesn't Work Inside Buildings] | OPIETA |
| Start Near Final Stage Entrance | GEOXLNAA
KNOXINON |
| Walk Through Walls | AEUKKGEA |
| Invincibility | KPVPVGGE |
| Infinite Health | 04E5:03
04E9:03 |
| Maximum Energy | 04EA:04 |
| Gun Power Modifier | 04E7:00 |
| Infinite Bulbs | 015C:64 |
| Infinite Key | 015D:64 |
| Infinite Nooses | 015E:64 |
| Infinite Vice Grips | 015F:64 |
| Infinite Potions | 0160:64 |
| Infinite Invisible Postions | 0161:64 |
| Infinite Money | 0162:64 |
| Infinite Missiles | 0163:64 |
| Infinite TNT | 0164:64 |
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.
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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.