New customization features, RetroAchievements improvements, and upstream updates from melonDS.

New Features @SapphireRhodonite

• Per-ROM Controller Mapping
  You can now configure custom physical button mappings per ROM under individual ROM settings.
  Perfect for games where you’d prefer a different control scheme.

• hg-engine Compatibility Fix
  Added a fix for ROMs using hg-engine (e.g., Pokémon HeartGold Generations v2.0).
  This ensures buttons continue working correctly during Pokémon battles.

  • Available as a per-ROM option: "Use hg-engine fix"

• RetroAchievements Updates

  • Updated rc_runtime to the latest version to match current emulator requirements
  • Added support for Encore mode
  • General improvements to achievement handling
  • Improved unlock state handling for both online and offline modes

• Package Name Change (MelonDualDS)
  The app now uses a different package name, allowing it to be installed alongside @rafaelvcaetano’s version.
  This change has been validated with the RetroAchievements team, and:

  • MelonDualDS is now officially a new standalone emulator with RetroAchievements support

Upstream Changes @rafaelvcaetano

• Updated core to melonDS 1.1
• Disabled audio latency preference
• Set frame presentation deadline for better behavior on low refresh rate displays
• Fixed emulator messages not being properly handled when sent in quick succession

Support & Early Access
If you'd like early access to upcoming builds, help shape development priorities, or participate in feature testing and feedback discussions, consider supporting the project on Patreon:

https://patreon.com/SapphireRhodonite

Early builds and work-in-progress features are released there before public GitHub releases, and community feedback directly influences what gets polished and shipped.
Thanks to everyone testing, reporting issues, and contributing.