gbdev.io

New article about the GBKISS LINK is live:

https://shonumi.github.io/articles/art38.html

This one examines an infrared modem released by Hudson in 1998. This enabled GB-to-PC connections and opened up the internet to the Game Boy.

Here, I detail the process of emulating its infrared […]

Seeing you livestream gbdev would be quite cool! When you're online feel free to ping us ;)

#gbcompo25 has now started!

The theme is... There is no theme this year, do whatever you want!

Have a great time everyone!

Game Boy Competition 2025 A game jam from 2025-05-31 to 2025-09-30 hosted by avivace, bbbbbr & Larold's Retro Gameyard. Stay updated on https://bsky.app/profile/gbdev.io Create original games, demos, homebrews tools and music ...

Get your #GameBoy dev tools fired up! The #gbcompo25 game jam starts in 24 hours!

We're excited to see the awesome Games, Music, Graphics, Demos and Tools the Game Boy community will make.
itch.io/jam/gbcompo25

The cash and prizes pool is now over $5000!
#gbcompo #gbdev #retrodev #retrogaming

thanks tom!

Game Boy Competition 2025 A game jam from 2025-05-31 to 2025-09-30 hosted by avivace, bbbbbr & Larold's Retro Gameyard. Stay updated on https://bsky.app/profile/gbdev.io Create original games, demos, homebrews tools and music ...

4 days left until #gbcompo25 kicks off and we still have a few sponsor seats available (starting at $150).

If you publish homebrew games and want to support the retro dev scene while showcasing your products and/or services, that's your perfect chance! Learn more about the event and reach out!

Save the date, the #GBCompo25 starts next month!

Bring your skills or learn new ones to create a game, a tool, a #demoscene or a music ROM for the #GameBoy and compete for over $5000 (and growing) in prizes!

Details and rules:
itch.io/jam/gbcompo25
gbdev.io/gbcompo25.html

#gbdev #retrogaming

Release v0.9.2 · gbdev/rgbds May the 4th be with you! ⭐ 👾 Added New 0-indexed string functions (we plan to eventually deprecate the old 1-indexed ones): STRFIND and STRRFIND: like STRIN and STRRIN STRCHAR: like CHARSUB STRSL...

RGBDS 0.9.2 released! It adds some new features, including more string functions in RGBASM and an excludable "background" color in RGBGFX; fixes some bugs (particularly with RGBGFX); and makes some things more convenient (like #string instead of needing "{string}").

github.com/gbdev/rgbds/...

My very first palette, created for an upcoming jam. As a palette eater, I'm proud to add my small contribution to this incredible number of palettes, found on Lospec.
Plus, it's a GB palette, what could be better?

((We'll talk about the jam later 😉🤫))

#pixelart #palette #lospec #gbcompo25

Some technical behind-the-scenes about how we maintain our software projects and make sure they remain maintainable

Super Game Boy Border Converter has been updated to 1.5
Now you can mouse over map, tileset or palette and see their matches. This is specially useful for those looking for perfect lossless conversions.

www.marcrobledo.com/super-game-b...

(PD: Injector big update is coming VERY soon as well!)

Game Boy Showdown 2025 A game jam from 2025-05-08 to 2025-05-25 hosted by Yogi (Tronimal). Welcome to the Game Boy Showdown 2025 - Cutscene Only Edition! The Game Boy Showdown is a 10 day long Game Jam, followed by a 7 day ...

Get ready!
The "Game Boy Showdown 2025 ‐ Cutscene Edition" Game Jam is starting May 9th (UTC)

This time it's all about animation- Join the Jam!

itch.io/jam/game-boy...

#nintendo #gameboy #nintendogameboy #gbstudio #gbdk #gamejam #gamedev #indiedev #homebrew

Thanks! We'll take a look!

Oops, should be fixed. Try again now!

#GBCompo25 is on the way!

We're looking for help designing this year's #GBCompo logo! There's a modest $250 USD bounty.

If you're a graphic designer w/ retro & #pixelart & logo experience, reply w/ portfolio link or dm for email info!

For reference here's GBCompo 21&23 logos
#GameBoy #Retrogaming

Submissions to GBA Winter Jam 2025 - The Addition Edition

The GBA Winter Jam 2025 has ended with 9 [updated and/or remade] submitted entries! Check them out at itch.io/jam/gba-wint...

#GBAWinterJam25

Game Bub: open-source FPGA retro emulation handheld I’m excited to announce the project I’ve been working on for the last year and a half: Game Bub, an open-source FPGA based retro emulation handheld, with support for Game Boy, Game Boy Color, and Game...

I’m excited to announce Game Bub, an open-source FPGA emulation handheld with support for Game Boy and Game Boy Advance cartridges: eli.lipsitz.net/posts/introd...

A Little Update Hi everyone! It's been a while. Just wanted to let you know I'm still working away at the next version of GB Studio. Here's a few things that have been implemented in the last few weeks: Work in progr...

Update about #GBStudio next version progress from @chrismaltby.com on itch io
* Support for Raspberry Pi in progress
* Option to override "Color Mode" per scene
* Option to disable GBC color correction

Much more detail in link
chrismaltby.itch.io/gb-studio/de...

#gbdev #gameboydev #retrogaming

Nine E-Readers, two Game Boy Advances, and three piles of test E-Reader cards, ready to be scanned.

Can't say this is what I thought I'd be doing in 2025...

About to test out cards I just got back from the printer.

Come help us fill it with content! :D Even just opening issues with wishes about which content should be covered/how would help ;)

ugBASIC An isomorphic language for retrocomputers

For those interested in Game Boy development using a BASIC-like programming language, the latest version of ugBASIC language and development toolkit (ugbasic.iwashere.eu) can now be used to build Game Boy ROM files, as well as executables for many other retro video game systems!

#GBDev

ndsdoc (ndsdoc.gbadev.net) is a work-in-progress community maintained documentation project detailing the hardware specifications of Nintendo DS and DSi, and is currently looking for contributors! Learn how you can contribute to the project at github.com/gbadev-org/n...

#NintendoDS #NDSDev

The @fosdem talk is in 30 minutes!

Come in UB4.136 if you're at FOSDEM or follow it live on: live.fosdem.org/watch/ub4136

I'm making new games for the Nintendo GBA E-Reader. Here's a sampling of the games scheduled for the first pack. More details at retrodotcards.com

We shipped an experimental support for NES games on Homebrew Hub!
We're already some entries over hh.gbdev.io/search?platf... and we're now officially maintaining a NES database (github.com/nesdev-org/h...) as well!

Help us reach the #nesdev community!

GBA Winter Jam 2025 - The Addition Edition A game jam from 2025-01-01 to 2025-02-28 hosted by Pyro_Pyro, kva64, GValiente & exelotl. Going into the new year, we think it's worth taking a look back at your past games, tools and projects. Taking...

A new GBA Winter Jam is here and accepting submissions starting today! This year's jam theme is finishing old projects, if you have a GBA game you would like to update/get done/make a similarly looking sequel to, this is the jam for you!

Learn more and join the jam at itch.io/jam/gba-wint...

The Year Wrapped for #GBDK!

2024 was a good year for releases, here's a quick browse of #GameBoy, #NES & #SMS/#GameGear games people made with #GBDK2020.

Check out the gallery & give some a try, most are free to download & play.
gbdk-2020.github.io/gbdk-2020-ga...

#indiedev #retrogaming #retrodev

Release v0.9.0 · gbdev/rgbds Merry Christmas everyone! 🎅 🎄 TipStarting with this release, we publish universal ("fat") binaries for macOS, so they'll support x86-64 and newer ARM (“Apple Silicon”) CPUs! ⚠️ Deprecated Treatin...

Version 0.9.0 of RGBDS has recently been released, adding a plethora of new features and fixes! 🎉
Get the latest release binaries and see full changelog at github.com/gbdev/rgbds/...
Updated documentation can be found here — rgbds.gbdev.io/docs/v0.9.0

We're now accepting links submissions to Homebrew Hub.

Would you like to see the homebrew game you developed in the database? Simply open an issue over github.com/gbdev/homebr... and provide some links.

hh.gbdev.io

FOSDEM 2025 - Rediscovering the fun of programming with the Game Boy

It's official! Our ISSOtm and Sylvie (maintainers of RGBDS) will be giving a talk at FOSDEM 2025 in Bruxelles!

Mark your calendars!

fosdem.org/2025/schedul...