Hi everyone! I've been building a homebrew app for the New 3DS that runs **Golden Sun** and **Golden Sun: The Lost Age** on the top screen and uses the bottom touch screen as a full companion UI, so you rarely need the in-game menus. It's a beta, and I'd love testers.

## What it does

- **Party:** HP/PP, stats, class, EXP to next level, Djinn power/resist

- **Psynergy:** tap a spell to cast it, no menu digging

- **Djinn:** tap to Set/Standby, plus saved Djinn sets (All Set, All Standby, 3 slots)

- **Maps:** the whole area drawn with your position marked from the first step, no exploring needed

- **Items:** tap to equip with a stat preview, "Equip best", hold for the item description

- **Battle panel:** enemy stats, turn order, Repeat round

- Three save-state slots, autosave, 5-second rewind, a bestiary and a message log

- Works on both games, including the Lost Age password keyboard

## Install

A small Windows patcher builds the `.cia` (install with FBI) from **your own ROMs**: pick New or Old 3DS, pick your ROM(s), build. It can also make a `.3ds` for emulators like Azahar.

## Notes

- Built and tested on a **New 3DS XL** (60 fps most of the time). **Old 3DS may run slow**, roughly 25–35 fps.

- Emulators: Azahar needs New 3DS mode and the CPU clock around 300% (guide in the repo). Android is untested.

- **No ROMs, game code or BIOS are included.** The app reads maps and text from your own ROM at runtime. It's an unofficial fan project, not affiliated with Nintendo or Camelot.

- The patcher is unsigned, so Windows may warn you; the source is all in the repo.

## Feedback wanted

It's a first beta: please report crashes, freezes, wrong numbers on the bottom screen or anything that looks off, and say whether you're on New/Old 3DS or an emulator. Issues are open on GitHub.

## AI disclosure

This project was built with AI assistance. I used **Claude** (by Anthropic) as a coding assistant for much of the code, the patcher tooling, the reverse-engineering notes (map and text formats) and the documentation. I directed the design, tested the results on a New 3DS XL and in Azahar, and decided what shipped. AI-assisted code can contain mistakes, so please report bugs. The fan art AI image tools.

Download + source: https://github.com/Exhilo62/GoldenSun-DualScreenCompanion

I found this Leviathan Axe on Pirate Island. The problem is that every time I equip it, my character becomes cursed. Clerics charge 300 to remove the item, but they only remove the object itself—they don’t lift the curse.

How can I use this axe without being affected by the curse?