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TGBDual Core: Linking Two Game Boy / Game Boy Color Games

This guide explains how to configure TGBDual Core per game in RetroDECK and how to launch linked Game Boy (GB) or Game Boy Color (GBC) games

Set TGBDual as the Emulator in ES-DE

  1. In ES-DE, highlight the game you want to launch with TGBDual.
  2. Open the Game Options menu (press Select or open the metadata menu).
  3. Go to Advanced Game Options.
  4. Set Alternative Emulator to TGBDual.
  5. Start the game.

Repeat this per game if you want different games to use TGBDual.

RetroArch Configure TGBDual

  1. Launch the first game via ES-DE.
  2. Open the RetroArch Menu → Subsystems.
  3. Select Load 2 Player Game Boy Link (GameBoy #1) → choose the same ROM you launched in retrodeck/roms/gb / retrodeck/roms/gbc .
  4. Go back to Subsystems → select Load 2 Player Game Boy Link (GameBoy #2) → choose the second ROM.
  5. Select Start 2 Player Game Boy Link to restart with both games linked.
  6. You now have two screens with the games running in parallell.