Ys I box art

Nintendo Entertainment System · cheat codes

Ys I cheats & codes

58 codes for Ys I on the Nintendo Entertainment System. The most useful 40 are listed below.

Emulator memory codes (58)

Ys I Emulator memory codes

How to use: These codes change values directly in the game's memory, written as address:value. They are meant for emulators: add them through your emulator's cheat menu.

EffectCode
Set Infinite Gold F035F:0F 035E:FF
Set Max. Exp. F035B:0F 035A:FF
Infinite HP0358:FF
Set Short Sword04FA:0F
Set Long Sword04FB:0F
Set Talwar04FC:0F
Set Silver Sword04FD:0F
Set Flame Sword04FE:0F
Set Small Shield0502:0F
Set Middle Shield0503:0F
Set Large Shield0504:0F
Set Silver Shield0505:0F
Set Battle Shield0506:0F
Set Chain Mail050A:0F
Set Plate Mail050B:0F
Set Reflex050C:0F
Set Silver050D:0F
Set Battle050E:0F
Set Heal Potion0512:0F
Set Mirror0513:0F
Set Blue Necklace0514:0F
Set Wing0515:0F
Set Mask of Eyes0516:0F
Set Hammer0517:0F
Set Power Ring051A:0F
Set Ring Mail051B:0F
Set Timer Ring051C:0F
Set Heal Ring051D:0F
Set Evil Ring051E:0F
Set Ys Book #10522:0F
Set Ys Book #20523:0F
Set Ys Book #30524:0F
Set Ys Book #40525:0F
Set Ys Book #50526:0F
Set Ys Book #60527:0F
Set Ruby052C:0F
Set Necklace052D:0F
Set Gold Pedestal052E:0F
Set Sapphire Ring052F:0F
Set Crystal0530:0F

Showing 40 of 58 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.

Ys I walkthroughs & guides

GameFAQs Walkthroughs, FAQs & message boardsStrategyWiki Free, community-written walkthroughHowLongToBeat How long it takes players to finishspeedrun.com World records & speedrun routesMobyGames Credits, releases & screenshots

More NES games with cheats

Ys II box art
Ys II NES · 1990 · RPG Deep cut

Back to Ys I: 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.