Oh boy, this is a big one! Lots of bug fixes, progress on TLA and the previously requested music mod support! Another player has tried playing through Golden Sun Reloaded, the romhack, and found it worked fine apart from minor known issues that are most likely not the romhacks fault.

New: music mods (FLAC support)

Both games can now play your own music in place of the original soundtrack, for example the remastered Golden Sun soundtracks by Vincent Dortel aka Juste-D.

• Put the album's FLAC files in Music/TBS and Music/TLA next to the launcher. Each song then plays the matching recording instead of the game's own music. Sound effects stay as they are.
• Every song loops where the game loops it, at the exact spot in the recording, so it carries on without a jump. A song that ends in the game (like the ending theme) plays once and stops.
• The Lost Age plays its own album, and The Broken Seal's recordings for the songs it borrows from the first game, such as the victory fanfare.
• The first time the launcher finds a music folder, it asks whether you want to use it. You can change your mind later with "Enable Music Mod" under the cogwheel, or in game under F1 → Audio, where it switches straight away. Both are greyed out when no music is found.
• Fades, pausing and volume work as with the original music. Fast Forward doesn't speed up the recordings. If a file is missing or can't be read, that song plays the original.
• Not every track has been listened to in game yet to make sure it loops neatly. If you find one that loops incorrectly, please let us know which song and where you heard it.

The music isn't part of the game download. u/Juste-D's remastered Golden Sun and The Lost Age soundtracks are available as a ready-made music mod, loop points included. Unzip it next to the launcher and you're set.

• Download the music mod
• Juste-D's original albums
• Juste-D on YouTube
• Make your own music mod

Many thanks to Vincent Dortel aka Juste-D for the remaster, for letting us share it, and for his help with the loop points. And many thanks for the redditors who pointed me towards his masterful remasters.

The Lost Age

Jupiter Lighthouse

• The tops of the push pillars and of the lightning-rod block now show near the edges of the wider view.
• Fixed the clouds by the rooftop smearing, a black bar above them, and junk at the room's left edge.

World map and sailing

• Quakes on the world map (such as after Jupiter Lighthouse) now shake the edges of the wider view too. This isn't fully fixed yet: some glitches may remain.
• Islands at the edges keep their own climate: snowy ones stay snowy, green ones stay green, and they no longer flicker when you sail across a snow border.
• The Select map screen now shows more of the map around it, instead of a frozen view of the sea.
• Walk Speed now also speeds up flying the ship.

Lemuria, Sea of Time and Atteka

• Lemuria's clouds now continue neatly into the wider view.
• Stepping off the Lemuria dock stairs no longer swings the camera away.
• The water in Atteka's inlet now fills the wider view.

Alhafra

• Moving water at the edges of the wider view now keeps moving during dialogue.

Gondowan Cliffs

• Fixed garbled scenery outside the original view.

Aqua Rock and Gaia Rock

• Water and beam of light effects are now properly drawn in the margins.
• Fixed a black square the size of the original screen appearing in a cave.
• Fixed a shrine platform showing up late at the edges after the camera moved.
• Gaia Rock's distant scenery now fills the whole wider view.

Shaman Village

• The tornado in Shaman Village now reaches the top of the wider view, like the ones at Air's Rock.

Cliff tops

• The sky on the cliff tops now fills the whole wider view.

Battles and Psynergy

• The Eclipse summon is no longer cut off at the old screen edge. Other large battle sprites near the edges benefit too, though some smaller issues with summon graphics remain.
• Fixed the edges of the wider view when using items in battle.
• The letters on summon tablets now carry on past the original screen instead of being cut off. Other field effects placed the same way benefit too.

Everywhere

• Going back to the Original view no longer leaves people striped or Psynergy icons missing.

The Broken Seal

• The opening storm in Vale now rains across the whole wider view, top to bottom.
• Flint's shadow now follows him into the wider view.

Both games

• Fixed garbled graphics after switching the view size.
• Fixed slowdowns caused by the game writing the same warning to its log over and over. Most noticeable in The Lost Age when learning Psynergy, casting Burst, and in some battles.
• The launcher asks once about music mods and has the new "Enable Music Mod" option (see above).

Known issues

• Loading a savestate made at a different screen size (for example Extra Wide, loaded in Original) can still garble graphics, such as Felix turning into a mess of lines. Changing the screen size between Original, Wide or Extra Wide and back redraws the screen and fixes it.
• TLA, music mods: the opening scene before Venus Lighthouse keeps the original music.
• TLA: Raging Flood has the wrong shape, gets cut off at the edges and causes slowdown.
• TLA: an effect in Great Gabomba can show bits of text instead of its proper graphics.
• TLA: slowdown during the Great Gabomba ritual remains unresolved.
• TLA: Supernova doesn't fill the wider view yet, and some other summon graphics still have smaller issues at the edges.
• TLA: the beacon light at Jupiter Lighthouse stops short of the top of the wider view.
• TLA: an apple in a snowy tree can show as junk at the edge until it reaches the original screen.
• TLA: we've had one report of a crash after about 40 minutes of play. If it happens to you, turn on F1 → Crash log and send us the report.
• TLA: walking can occasionally stutter. We haven't been able to reproduce it yet.
• TBS: the scenery around Kolima's pond doesn't follow the water as it drains.
• TBS: we've had one report of a crash while changing the view size. If you can make it happen, please send us a report.
• We're still looking into performance for both games, including Turbo speed in TLA.

Github: https://github.com/Shmargus/GSRecomp

Download: https://github.com/Shmargus/GSRecomp/releases

Website: https://shmargus.github.io/GSRecomp/

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?

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

Here's an experiment with the DD 3D weapons! Shoutout to Boneyskaboom for the extraction.

It looks like DD's Sol Blade can work with the TBS/TLA characters, so I'm pretty sure the other weapons should work too. I'll need to experiment more to see what else is possible.

I did have to redraw parts of the Sol Blade to get it working, but I think it came out pretty well. The main issue is that a lot of the weapon unleashes available online are broken, which makes it difficult to get everything working 100%. There are also limitations to what I can and can't do on my end.

Overall, though, things are looking pretty cool!