A downloadable Game Boy ROM

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El Dueloroso is a western-themed arcade game for the Nintendo Game Boy and Analogue Pocket.
Submitted as a Game Boy Competition 2021 entry.

Made with GBDK-2020.

Source code available on GitHub.


  • Gameplay experience inspired by early Game Boy titles
  • 15 levels
  • 3 game modes
  • 4 difficulty options
  • Original soundtrack and graphic assets
  • 64 KiB ROM (with MBC1)
  • SRAM for high scores saving


Download NowName your own price

Click download now to get access to the following files:

El Dueloroso - Game Boy ROM 64 kB
El Dueloroso - Analogue Pocket ROM 64 kB

Development log


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¿final version?

Unless there is a lot of demand for an update, this will be the final version of the game.

love this >:0   its great

Loved it! Nailed the retro arcade feel! Really fun, I could not stop playing it! Great work!

Hey man great game.

The only thing I would change was a different gunshot sound effect for when you fire your last bullet. It's hard to know how much ammo you have in all the chaos. Maybe a lower pitched beep for your last shot.

I think you should also change the sound effect for when you're firing and there's no bullets. Maybe something like NR10-14 0x00,0x40,0xA1,0x14,0x87. Because right now it sounds very similar to the regular bullet sound so on my first time against the bandits I didn't know I was out of ammo.

I loved the horse game by far the most.

Great game again! Good luck in the competition!

Thank you for your feedback! I really appreciate any input.

I may have been careless with the sound effects and will try to correct this in a future release.

Right on. Yeah sound effects are tough to get right for me as well.