Below is the most reliable collection of codes, formatted for North American patched ROMs (Note: codes generally work on both Japanese originals and fan-translated versions unless specified).
Allows you to change the item in the first slot of a character's inventory. You may need to modify the value 63 to get specific items.
121D5D44 0000xx63
*(Replace 'xx' with Item ID in Hex)*
Fire Emblem: Shin Monshou no Nazo ~光と影の英雄~ (New Mystery of the Emblem: Heroes of Light and Shadow) remains a high-water mark for tactical RPG enthusiasts. Released exclusively in Japan for the Nintendo DS in 2010, it is a direct sequel to Fire Emblem: Shadow Dragon and a remake of the long-lost Mystery of the Emblem Book II. For Western fans, playing this game requires translation patches and, often, a desperate need to bypass its infamous difficulty curve.
Enter Action Replay codes. These cheat codes are the keys to the kingdom, allowing players to manipulate every facet of the game—from infinite movement to recruiting characters who would otherwise die in the prologue. Whether you are playing on a physical DS with an Action Replay cartridge or using an emulator like DeSmuME or melonDS, this guide will serve as your definitive encyclopedia for Fire Emblem: Shin Monshou no Nazo Action Replay codes. Fire Emblem Shin Monshou No Nazo Action Replay Codes
Keeps the selected unit's HP full.
121D5D28 0000270F
This is where Shin Monshou no Nazo AR codes shine. The game has a brutal kill-or-recruit mechanic. These codes bypass that.
Recruit Enemy Units (Press L+R over an enemy) Below is the most reliable collection of codes,
94000130 FCFF0000
120AE7F8 0000E001
220AE7FA 000000AE
D2000000 00000000
Effect: Hover over any enemy unit (even Bosses like Lang or Hardin) and press L+R. They will instantly join your party with their current stats. Be careful—recruiting story-essential bosses can break the game flow.
Unlock All Characters in the Avatar Logbook
22100843 000000FF
C0000000 0000003F
22100844 000000FF
DC000000 00000001
D2000000 00000000
Effect: Instantly fills your support log and allows you to summon any character into the "Training" or "Download" content. Fire Emblem: Shin Monshou no Nazo ~光と影の英雄~ (New
Free Reclass (Ease Class Restrictions)
520AAB98 E5941000
020AAB9C E3A01000
D2000000 00000000
Effect: Removes level and gender locks for reclassing. Your female Pegasus Knight can become a male-only Berserker. Note: Visual glitches may occur for gender-locked classes.
Fire Emblem: Shin Monshou no Nazo – Light and Shadow’s Hero (often abbreviated as FE12) is a unique entry in Intelligent Systems’ legendary tactical RPG series. Released exclusively in Japan for the Nintendo DS in 2010, it is a direct sequel to Fire Emblem: Shadow Dragon and a remake of the Japan-only Super Famicom title Mystery of the Emblem.
For Western fans, playing Shin Monshou no Nazo required either importing the cartridge or, more commonly, patching a ROM with a fan translation. But even with the language barrier broken, the game remains notoriously difficult. Enter Action Replay Codes—the backdoor keys to the kingdom.
Whether you want to breeze through the brutal Lunatic Reverse difficulty, recruit every character in a single playthrough, or simply max out your favorite unit, Action Replay codes (usable via emulators like DeSmuME or NO$GBA) transform the experience. This article serves as your complete encyclopedia for finding, using, and understanding Fire Emblem: Shin Monshou no Nazo Action Replay codes.