Tomodachi Life: Living the Dream - Save Editor

A browser-based save editor for Tomodachi Life: Living the Dream (Nintendo Switch). Drop your Mii.sav, Player.sav, and Map.sav files in, edit, and download a patched copy. Everything runs locally - files never leave your machine.

Features

• Player tab - global/player state from Player.sav.
• Mii tab - per-Mii editing from Mii.sav.
• Map tab - island layout from Map.sav, with placement-aware footprints sourced from the game's WalkingGrid data.
• UGC editor - replace UGC textures (clothes, food, goods, exteriors, interiors, map objects, map floors) with your own images.
• ShareMii - import and export Miis and UGC items between save files, compatible with the ShareMii file format created by Star-F0rce.
• Advanced - raw hash-keyed entry browser for fields the structured tabs don't cover yet.

Adding a Localization

Translations live in messages/<locale>.json. en-US is the source of truth; locales are auto-discovered at build time. Base PRs against the dev branch.

1. Create the file. Copy messages/en-US.json to messages/<locale>.json (e.g. de-DE.json, ja-JP.json).
2. Backfill keys. Run npm run i18n:sync to mirror the en-US structure into your new file.
3. Translate. Edit the values.
4. Verify. Run npm run i18n:check, then npm run dev and pick the new language from the switcher.
5. Pre-flight. Run npm run precommit before opening a PR to the dev branch.

If a language ships in multiple regional editions of the game (e.g. Spanish exists as both USes and EUes), you can offer both without duplicating the translation file. Add an alias to aliases in tools/i18n-config.ts (e.g. 'es-US': 'es-EU') and a UI-to-game mapping in src/lib/sav/gameLocale.ts ('es-US': 'USes'). Both tags then appear in the switcher, share the same UI strings, but pull region-specific game content.

Credits

• tlmodding/living-the-dream-save-editor - For the base structure of the save file
• tlmodding/ltd-gamedata - early reference for save key hashes.
• Star-F0rce - For creating the ShareMii tool.

Disclaimer

This is an unofficial, fan-made tool. Tomodachi Life: Living the Dream is © Nintendo.

License

AGPL-3.0-or-later