• **Pan Docs** - The single, most comprehensive technical reference to Game Boy available to the public. Corrected, updated and maintained by the community.
• The Cycle-Accurate Game Boy Docs - A precise documentation by AntonioND to make a cycle-accurate Game Boy emulator.
• Complete Technical Reference - by Gekkio.
• Game Boy Architecture: A Practical Analysis - by Rodrigo Copetti.
• Game Boy Project Report - Report of an hardware [emulator](https://github.com/kitsuneh/SVGameBoy) (on a Terasic DE1-SoC Board) developed as final project for the CSEE4840 Embedded Systems Design course at Columbia University.
• gb-opcodes - Opcodes table
• RGBDS opcodes reference - A reference of all instructions, including short descriptions, cycle and byte counts, and explanations of flag modifications.

Game Boy Color

• Bootstrap ROM
• Unused Palettes
• Colorization palettes in the BIOS
• Boot ROM Disassembly
• GBC Hicolour notes - A technical note regarding Hicolour mode trick for Game Boy Color and its realization in the GBC game “Crystalis”.

Hardware

• DMG Schematics - Hardware schematics.
• The Game Boy Project - Provides a study on the hardware and detailed constructional information for the implementation of three 8-bit bidirectional parallel ports.
• fruttenboel - Page with loads of information on the hardware, custom boards to interface with the console and other related projects.
• Game Boy hardware database - Data and photos of various types of Game Boy consoles.

Peripherals

• Dan Docs - Obscure Game Boy hardware documentation.
• Edge of Emulation - plus/tree/master/src/docs/technical) in the GBE- emulator documentation.
• Mobile Adapter GB - Internet connectivity and DLC on the Game Boy Color.
• Pocket Sonar - A blue cart with built-in sonar hardware.
• Zok Zok Heroes - Zok Zok Heroes' Full Changer, a motion-activated accessory.
• Infrared Madness - Infrared communication on the Game Boy Color.
• Game Boy 4-Player Adapter - DMG-07.
• Barcode Boy - The first Game Boy card-scanner.
• Barcode Taisen Bardigun - A late 90s DMG-GBC barcode reader.
• DMG-07 Technical Documentation
• Creating photo realistic images with neural networks and a Gameboy Camera
• Ben Heck Reverse Engineers Game Boy Printer
• Mobile Game Boy Adapter
• GB KISS LINK MODEM
• The Game Boy Printer - An in-depth technical document about the printer hardware, the communication protocol and the usual routine that games used for implementing the print feature.

Cartridges

• DMG-BEAN-02
• AntonioND's docs - Corrected schematics and infos on cartridge header data.
• Gekkio's Game Boy cartridge types - An overview on existing cartridge types.
• MBC1
• no MBC
• MBC1
• MBC2
• MMM01
• Game Boy Cartridges Schematics - Schematics for MBC2 and MBC3 types.
• Cartridges PCB photos
• MBC1+RAM+Battery cartridge Schematic - First schematics by Jeff Frohwein.
• MBC1 and MBC2 cartridges circuits - and explanation on how these MBC bank switch and control RAM.
• Game Boy cartridge PCB photos
• Emulating a GameBoy Cartridge - Emulating the functionality of a Game Boy cartridge with the development board STM32F4.
• Wolf - Game Boy cartridge with co-processor.
• Reiner Ziegler's Game Boy page - Commercial and homemade programmable cartridges and programming systems. Tutorials, wiring and schematics provided.
• Introduction to Game Boy Hacking - Workshop introducing basic assembly, debugging and reverse engineering.
• GBSOUND.txt - A document detailing the Game Boy sound engine.
• gbdev FAQs - Must read by Jeff Frohwein.
• Game Boy Bootrom - Commented dump of the DMG bootrom.
• Differences between the Z80 and the gameboy's processor
• Gameboy 2BPP Graphics Format - Information on how the Game Boy interprets VRAM tile data to color pixels.

Cartridges

• Reverse Engineering fine details of Game Boy hardware - 43 minutes talk by Gekkio given at Disobey 2018 ([errata](https://gekkio.fi/blog/2018-02-05-errata-for-reverse-engineering-fine-details-of-game-boy-hardware.html)).
• Emulation of Nintendo Game Boy - Overview of the Game Boy hardware with the perspective of building an emulator.
• DMG-01 - An educational Gameboy Emulator in Rust and a companion book explaining its development. *[Oh Boy! Creating a Game Boy Emulator in Rust](https://media.ccc.de/v/rustfest-rome-3-gameboy-emulator)- is a talk given at Rust Fest 18 about this.
• Building a Game Boy emulator in JavaScript - Step by step tutorial.
• Writing a Game Boy emulator, Cinoop
• 0dmg - Learning Rust by building a partial Game Boy emulator.
• RealBoy Emulator - A series of posts about the design and implementation of the RealBoy Emulator.
• Codeslinger - Another series of posts documenting the building of an emulator.
• Why did I spend 1.5 months creating a Gameboy emulator? - Blog post.
• binjgb rewind - Implementing a *rewind- feature.
• binjgb on the web - Porting of the binjgb emulator to Web Assembly. [(Part 2)](https://binji.github.io/2017/02/27/binjgb-on-the-web-part-2.html)
• binjgb debugging hangs - Investigations on emulations quirks.
• Decoding Gameboy Z80 opcodes - How to algorithmically decode Game Boy instructions (as opposed to writing one huge switch-case statement).
• Porting a GO Game Boy emulator to WebAssembly
• About swotGB - Notes about the development of a Game Boy emulator in JavaScript.

Testing

• Blargg's test roms
• Gekkio's test roms
• GB Accuracy Tests
• 144p Test Suite - Port of Artemio Urbina's 240p Test Suite to the Game Boy.

Testing

• Choosing tools for Game Boy development

Compilers

• API docs: Getting Started
• Documentation, links and tools
• Turbo Rascal Syntax Error - Complete suite (IDE, compiler, programming language, resource editor) intended for developing games/demos for 8 / 16-bit line of computers, including the Game Boy and Game Boy Color.
• RGBDS-Live - In-browser coding environment to try out RGBDS.
• tniASM - Macro Assembler.
• gbasm-rs - An opinionated Rust based compiler for Game Boy z80 assembly code.

Emulators

• BGB - Powerful emulator and debugger. Provides an accurate hardware emulation.
• Emulicious - Provides accurate emulation and includes powerful tools such as a profiler and source-level debugging for ASM and C via a [VS Code debug adapter](https://marketplace.visualstudio.com/items?itemName=emulicious.emulicious-debugger).

Tools

• Retr0 GB - An engine for creating games (expands GBDK).
• GBExtended - C library extending gbdk.
• Dot Matrix Game Editor - An IDE for Game Boy programming in a C-like language called GBL, with many other features like tile and map extraction, WLA-DX assembly, and more.
• ROM Header Utility - An online tool to inspect and modify a ROM's header data, including the logo.
• Harry Mulder's GB Development - Some sources and home of Game Boy Tile Designer (GBTD) and Game Boy Map Builder (GBMB) tools.
• brewtool - A collection of primitive editor/converter tools for making assets used with homebrew ROM development.
• Carillon Player - Music Engine.
• GB-convert - Game Boy tile conversion and map editor tool (converts to assembly).

ASM

• gb asm tutorial - Step by step tutorial, building several ROMs to accompany its explanations.
• Assembly tutorial by David Pello - Good document to learn to produce working asm code for gb. Brief explanations of many important topics. Many examples with commented source code.
• Making an Empty Game Boy ROM (in Wiz)
• Making Art for the Game Boy
• Beginner's Guide to Reverse Engineering GB - Some starting tips on disassembling and reverse engineering.
• FlappyBoy: Making a simple Game Boy Game
• Super Game Boy development - Step by step tutorial to implement Super Game Boy features (frame and palettes).
• GameBoy programming tutorial: Hello World! - Step by step tutorial.
• OAM DMA tutorial - Example of how to use OAM DMA in assembly.
• dev'rs ASM section - A lot of working demos and sources.
• Nitty Gritty Gameboy Cycle Timing
• Mode3 Sprite Timing
• GameBoy Color DMA-Transfers v0.0.1
• STAT interrupt timings
• Video Timing
• Game Boy Assembly Language Primer - Simple template code with memory defines, copy routines and IBM font tilemap.
• Vim syntax file for the Game Boy assembler RGBASM - Vim syntax highlighting for RGBDS assembly.
• Vim syntax file for RGBDS - Another Vim syntax highlighting file for RGBDS assembly.
• sublime-rgbds - A Sublime Text 3 package for RGBDS, including syntax highlighting and some completion snippets.

C

• 8-Bit Wonderland - Well-written introductory document about how the Game Boy works and how to start developing working code for it.
• How to Write a Simple Side Scrolling Game - Old (but still relevant) tutorial.
• Just another simple tutorial
• GBDK Tutorial - Fairly minimal game demo for getting started with GBDK.
• GBDK Sprite - Presents a workflow for getting multiple sprites to display and animate.
• GBDK Color - Extends your knowledge of basic spriting on the Game Boy by adding colors to sprites, backgrounds and the window layer.
• GBDK Joypad - Details the use of the joypad with GBDK.
• Game Boy home of Flavor - Some full games and sources.
• GBDK Configuring and Programming Tutorial - Configuring GBDK, Using Tiles, Colliding Sprites, GBTD, GBMB, Memory Management and ROM Banking.
• GBDK Programming Video Tutorials - A series of video tutorials introducing beginners to programming with GBDK.
• Larold's Jubilant Junkyard - A collection of detailed GBDK-2020 based tutorials.
• Game Boy home of Flavor - Some full games and sources.

C

• Homebrew Hub - A community-led attempt to collect, archive and preserve every unlicensed and homebrew game released for Game Boy. Entries are playable online.
• Novascape
• oranges
• loderunner
• Hives
• GB raycaster, Vision-8 - and some other projects.
• Burly Bear vs. The Mean Foxes - color-burly-bear.html) port)
• Black Castle - Side scrolling platformer for the Game Boy ([itch.io](https://user0x7f.itch.io/black-castle)).
• Genesis - Shmup for the Game Boy ([itch.io](https://user0x7f.itch.io/genesis)).
• Indestructo Tank!
• Super JetPak DX
• Powa! - Side scrolling platformer for the Game Boy (Color) ([ZGB engine](https://github.com/Zal0/ZGB/)).
• Cavern - ([ZGB engine](https://github.com/Zal0/ZGB/)).
• Mona and the Witch's Hat Deluxe - ([ZGB engine](https://github.com/Zal0/ZGB/)).
• The Bouncing Ball
• DMG Deals Damage

ASM

• Snake
• Death Planet
• Quartet - Puzzle game for the Game Boy (Color) and Super Game Boy.
• Dangan
• exeman

GB Studio

• Soul Void - Interactive horror fiction.
• Deadeus
• SUPER IMPOSTOR BROS.

Demos

• Reverse engineering Kirby's Dreamland 2
• Reverse Engineering a Gameboy ROM with radare2 - A walkthrough to reverse engineer a Game Boy ROM challenge using radare2.
• DMA hijacking - A simple technique that allows you to run custom code in most GB/SGB/CGB games, provided you have an ACE exploit.
• Disassembling Link's Awakening - A series of blog posts about disassembling Link's Awakening DX.

Changing the camera's behavior

• Game Boy Camera Canon EF Lens Mount
• Game Boy Camera to Canon Lens mount - based on the above.

Post processing

• GB Studio - Drag and drop game creator with simple, no knowledge required, visual scripting.
• Resources to get started
• Dedicated Discord
• Digitized Speech in Game Boy Games
• Sniffing Game Boy serial traffic with an STM32F4
• Virtual Game Boy Printer with an STM32F4
• Printing on the Game Boy Printer using an STM32F4
• Programming Game Boy Chinese cartridges with an STM32F4
• Pokemon Pocket Computer: - What is it and how to use it to make cheat codes.
• Booting the Game Boy with a custom logo - Bypassing the Nintendo logo check.
• part 1
• Nintendo's fake logos - Every cartridge has to show the authentic logo to be considered valid and be run, but obviously some companies managed to exploit the check system.
• Work Master OS - Russian multi tasking operating system.
• Dumping the Super Game Boy Boot ROM
• Digitized Speech in Game Boy Games
• Work Master OS - Russian multi tasking operating system.

Directories

• Archive of related files
• The Game Boy Archive - A library of Game Boy related software, hardware and literature. Aimed to mirror and preserve old and fragmented contributions from the last three decades.

Websites

• devrs.com/gb - Old home of the scene: examples, sources, complete documentation, guides, tutorials and various tools.
• pdroms.de - Game Boy releases.
• Handheld Underground - Unlicensed games, blog posts about Game Boy, home of the hhugboy emulator.

Acknowledgements

• every

Sponsors

• DigitalOcean