Save Editor
Edit your Tomodachi Life save file directly in the browser. No download, no risk. Supports 3DS (savedataArc.txt) and Living the Dream via Ryujinx.
Unlock Your Island's
True Potential
Tired of waiting for daily donations to afford that expensive apartment interior? Want to rename your island without starting over? Our browser-based save editor lets you modify your Tomodachi Life save file instantly.
Where is my save file?
%appdata%\Ryujinx\bis\user\save\...\savedataArc.txt%appdata%\Lime3DS\sdmc\Nintendo 3DS\...\savedataArc.txtWhy Use the Tomodachi Life Online Save Editor?
Most save editors require you to download an executable, trust a stranger's binary, and hope it doesn't break your file — or your PC. This tool works entirely inside your browser. Your savedataArc.txtis read into memory locally using the Web File API; it is never uploaded to any server, never logged, and never shared. Close the tab and it's gone.
The editor is built for both the Nintendo Switch remaster — Tomodachi Life: Living the Dream — running under Ryujinx, and the original 3DS title running under Lime3DS or Citra. All three emulators store the save in the same binary format, so the same offsets apply. The money field sits at offset 0x1E4BB8 as a 32-bit little-endian unsigned integer, capped at 9,999,999 by the game engine itself. Island name lives at 0x1E4BCC as UTF-16LE, up to 10 characters.
Because everything runs in the browser, there is nothing to install, no .NET runtime to wrangle, and no antivirus false-positives to dismiss. It works on Windows, macOS, and Linux — anywhere a modern browser runs. Future features like Mii injection and relationship editing will ship as browser-side updates with zero reinstall friction.
How to Edit Your Tomodachi Life Save File
- 1Find your save file — On Ryujinx, navigate to %appdata%\Ryujinx\bis\user\save\ and look for the folder matching Tomodachi Life's title ID. On Lime3DS or Citra, check %appdata%\Lime3DS\sdmc\Nintendo 3DS\…. The file is always named savedataArc.txt.
- 2Back it up first — Copy savedataArc.txt to a safe folder before you do anything. One bad edit and you'll want that backup.
- 3Drag the file into the editor above — Drop savedataArc.txt onto the upload zone, or click it to open a file picker. The editor parses the binary instantly — no upload, no wait.
- 4Make your edits — Type a new money value or drag the slider. Change your island name (up to 10 characters). Hit Max to jump straight to $9,999,999.
- 5Download the modified file — Click "Download Modified Save File". Your browser saves the patched binary to your Downloads folder.
- 6Replace the original — Copy the downloaded file back to the emulator's save directory, overwriting the original savedataArc.txt. Reload your save in the emulator and the changes appear immediately.
What Can You Edit?
| Field | Details | Status |
|---|---|---|
| 💰 Money | 0 – $9,999,999 (game maximum) | Live |
| 🏝️ Island Name | Up to 10 UTF-16 characters | Live |
| 👗 All Clothing | Unlock every outfit in the wardrobe | Coming Soon |
| 🧑🤝🧑 Mii Relationships | Set friendship / romance levels between Miis | Coming Soon |
| 🛠️ Crash Fix | Patch known save-corruption flags | Coming Soon |
| 🍱 Food Preferences | Edit each Mii's liked / disliked foods | Planned |
| 🎵 Song Unlock | Unlock all concert songs | Planned |
Supported Emulators
The primary target. Ryujinx stores saves under %appdata%\Ryujinx\bis\user\save\. Look for the folder with the game's title ID and find savedataArc.txt inside.
The actively maintained Citra fork. Save path: %appdata%\Lime3DS\sdmc\Nintendo 3DS\…\savedataArc.txt. Offsets are identical to the Switch version for US/EU regions.
The original 3DS emulator. Same save format and offsets as Lime3DS. Path: %appdata%\Citra\sdmc\Nintendo 3DS\…\savedataArc.txt.
Frequently Asked Questions
Yes, as long as you keep a backup first. This editor only modifies the specific bytes it knows about — money and island name — and leaves everything else untouched. The risk of corruption is minimal, but always back up before editing.
No. The file is read entirely in your browser using the Web File API. It never touches a server. You can disconnect from the internet before dropping the file in and the editor will still work.
The file is called savedataArc.txt. Despite the .txt extension it is a binary file. Do not open it in a text editor — just drag it straight into the upload zone.
Open Ryujinx, right-click Tomodachi Life: Living the Dream in the game list, and choose "Open User Save Directory". The savedataArc.txt file will be in that folder.
In Lime3DS: Emulation → Open Lime3DS Folder, then navigate to sdmc/Nintendo 3DS/…/title/…/data/00000001/. In Citra the path is similar under the Citra app data folder.
The game engine caps money at $9,999,999. The save field is a 32-bit unsigned integer but the game enforces this limit in-engine. Setting a higher value will be silently clamped back down when the game loads.
For US and EU region saves (both 3DS and Switch versions), money is stored at offset 0x1E4BB8 as a UInt32 little-endian value. Island name starts at 0x1E4BCC as UTF-16LE, up to 10 characters (20 bytes).
The Japanese 3DS release may use different offsets. This editor is tested against US and EU region saves. If you load a JP save and the values look wrong, do not save — the offsets likely differ.
Tomodachi Life has no online multiplayer or anti-cheat system. There is no ban risk. The game is entirely single-player.
Not yet. Mii injection and relationship editing are on the roadmap. The binary format for those fields is more complex and requires additional reverse-engineering work. Sign up for updates to be notified when they ship.
Make sure you replaced the correct file in the correct folder. Some emulators cache saves — try closing and reopening the emulator. If the save still won't load, restore your backup and try again. Never edit the file while the emulator has it open.
The editor uses standard Web APIs that work in Chrome, Firefox, Safari, and Edge on both desktop and mobile. File drag-and-drop won't work on mobile, but the tap-to-browse fallback will.
Understanding the Tomodachi Life Save File Format
The Tomodachi Life save editor works by reading and modifying the binary save file used by both Tomodachi Life: Living the Dream and the original Tomodachi Life on 3DS. The save file is named savedataArc.txt despite being a binary file, not a text file. This Tomodachi Life save file contains all game state: your island money, island name, Mii resident data, relationships, inventory, and progression flags.
The Tomodachi Life save editor reads specific byte offsets within the save file to extract and modify values. For US and EU region Tomodachi Life saves, the money field is located at offset 0x1E4BB8 as a 32-bit little-endian unsigned integer. The Tomodachi Life island name starts at offset 0x1E4BCC encoded as UTF-16LE, supporting up to 10 characters. Mii data in the Tomodachi Life save file begins at base offset 0x1C8A with a stride of 0x660 bytes per Mii slot, supporting up to 100 Mii residents.
This Tomodachi Life save editor processes everything client-side using JavaScript DataView and ArrayBuffer APIs. When you drop your Tomodachi Life save file into the editor, the browser reads the binary data into memory, the save editor parses the known offsets, displays the current values, and lets you modify them. When you download the modified Tomodachi Life save file, the editor writes the new values back to the correct byte positions and triggers a browser download. No server is involved at any point in the Tomodachi Life save editing process.
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Ready to Edit Your Save?
The TomoHub save editor runs entirely in your browser. Edit your Tomodachi Life save file without downloading any risky software.
Compatible with Ryujinx, Lime3DS, and Citra.
Start Editing Now ↑