Game Boy Development community

We are a non for profit collective of passionate developers and hackers working on development tools, homebrew games, emulators, preservation and documentation for the Nintendo Game Boy handheld console, the original gray brick from 1989.

Join us on GitHub, Mastodon, Twitter and Discord.


Here's what we are up to:

Pan Docs Star

The single, most comprehensive technical reference to Game Boy available to the public.

Game Boy CPU Opcode tablesopen in new window

awesome-gbdev  Star

Curated list of Game Boy development resources such as tools, guides, technical documentation, tutorials, emulators, related projects and open-source ROMs. Everything you'll ever need to know and see about this console is here.
If you want to code an emulator, create your own game or simply dive into the software and hardware architecture of the Game Boy, this is the place!


Rednex Game Boy Development System: the de-facto ASM development toolkit for the Game Boy and Game Boy Color.

hardware.incopen in new window - Standard include file containing Game Boy hardware definitions for use in RGBDS projects.

rgbds-liveopen in new window - A live Game Boy programming environment in the browser, allowing for realtime assembly programming with RGBDS.

GB ASM Tutorial  Star

A (work in progress) tutorial on how to program for the Game Boy in assembly, touching on every aspect required to make Game Boy games, via a Hello World, constructing an Arkanoid clone, and capping off by making a playable Shoot-'Em-Up.

GBDK 2020  Star

Maintained and modernized GBDK, the Game Boy Development Kit. Now powered by an updated version of the SDCC toolchain, provides a C compiler, assembler, linker and a set of libraries.

Chat Channels 

The places where our community thrives. Here we chat, discuss, help each other and show what we are working on. We have a Discord server, an IRC channel, and more.

Homebrew Hub 

Play Game Boy games online from an archive of hundreds of entries!
A community-led attempt to collect, archive and save every unofficial game, homebrew, demo, patch, hackrom for Game Boy produced by the community through the last 3 decades of passionate work.

The Game Boy Archive 

Digital library of Game Boy related software, hardware and literature. Aimed to mirror and preserve old and fragmented contributions in the scene from the last three decades.


We host coding competitions in which anyone can partecipate by creating original games, demos, homebrews tools and music for the Game Boy and compete for glory and prizes.

GB Competition '21 - GB Competition '23