GodotBoy allows you to play ROMs from everyone's favorite 80s portable game console as well as it's 90s color variant. You can add an emulator to you game. This is super useful for publishing HomeBrew games from tools like GBStudio

The sample is the most minimal example I could come up with and a ROM created from GBStudio (another MIT licensed project)

GodotBoy a GDExtention written in Rust with GodotRust and RBoy.

• 0.1.4: It now supports Windows, Linux, Linux on ARM64, and Android (on ARM64, but no reason it can't support Android x86 if anyone wants that).
• 0.2.0: Added support for GBA, but requires a BIOS file. Maybe someday figure out how to remove that requirement. v0.4.0 note: this was removed, it is beyond the scope of this project. If this is of interest to you, find me on BlueSky.
• 0.3.0: Now has support for Web exports. Requires Threads and Extension support in web exports.
• 0.4.0: Memory tools added! GBStudio added the script memory map to the exports, so you can now use the memory read/write tooling to trigger events in Godot or modify the game at run time.
• 0.5.2: Mostly version update of core libraries in better interop with GodotRust.

Links:

• Itch.io
• GitLab Project
• GodotRust, toolchain used to compile
• RBoy, emulator under the hood