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gbdev.io

@gbdev.io
787 followers 16 following 71 posts

Home of the Game Boy (Advance) homebrew development scene. We're working on (open) development tools, documentation and digital preservation. gbdev.io gbadev.net

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gbdev.io @gbdev.io · 13/09/2026
Less than 12 hours left until the submission deadline for GBA Jam 2026! Good luck to everyone finishing their jam entries 💜 itch.io/jam/gbajam26
itch.io
GBA Jam 2026
A game jam from 2026-06-13 to 2026-09-30 hosted by Pyro_Pyro, Nikku4211, skylyrac, GValiente, kva64, exelotl & avivace. The full-scale GBA game jam is back again for 2026 - just in time for the consol...
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Breathing Retro @breathing-retro.bsky.social · 12/09/2026
emibios, accuracy-focused #GBA BIOS replacement www.reddit.com/r/EmuDev/com... github.com/coolbho3k/em... #retrogaming #gbadev #gameboy #gbdev #emudev #emulation
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gbdev.io @gbdev.io · 11/09/2026
#GBAJam2026 is sponsored by @bitmapbureau.com, the indie dev team behind Terminator 2D: NO FATE, an expertly and lovingly made game adaptation of the original film, and Xeno Crisis, a stellar multiplatform arcade arena shooter, of which there's 3 GBA carts offered as prizes to winning jam entries!
A promotional picture for Bitmap Bureau, showing their logo in the center and images of their two games mentioned in the post. On the left are images for Xeno Crisis, the top left picture shows three variants of boxes for the GBA version of the game, the bottom picture is a screenshot from the port of the game to modern platforms, showing one of the first boss fights. On the right are promotional pictures for Terminator 2D: NO FATE, the top picture is a screenshot from the game showing one of the cutscenes, the bottom picture shows the packaging for Day One PS5 edition with reversible cover, manual and collectible coin.
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Nova @novasquirrel.com · 29/08/2026
I got my Game Bub yesterday and it's really sleek and cool and the buttons feel nice. I haven't spent a ton of time with the controls since I played docked yesterday, but it does pass my "feels good to play Puzzle League" d-pad test.
Purple Game Bub console showing Puzzle League's title screenBack of purple Game Bub console, showing Tetris Blast insertedPurple Game Bub console showing Tetris Blast's title screen
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gbdev.io @gbdev.io · 10/09/2026
#GBAJam2026 is sponsored by Game Bub! An open-source FPGA handheld able to play GB, GBC and GBA ROMs and cartridges, featuring HDMI output, built-in rumble, Link Cable support and more. A pre-assembled Game Bub will be awarded to one of high ranking jam entries! www.crowdsupply.com/second-bedro...
A promotional picture for Game Bub, the open-source FPGA handheld, with a pre-assembled device shown on the center of the image. This assembled variant comes in a clear shell, with its screen is located in the center of the device, with two sets of buttons and two speakers located on both of its sides. The Game Bub logo is displayed in front of the device, which is currently showing a starry night sky on the screen. Behind it is an image of the device's PCB board layout.
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gbdev.io @gbdev.io · 09/09/2026
We welcome Epilogue as one of the #GBAJam2026 sponsors! Their GB Operator, offered as a prize to one of the winning entries, is a cartridge reader device for Game Boy and Game Boy Advance carts that enables real time game emulation, ROM and save data backup, bootleg flash cart support and more!
A promo image for Epilogue's GB Operator, showing the Epilogue brand logo on the bottom right, a wireframe three side view of the GB Operator shell on the upper left, a picture of an actual GB Operator with a GBA cartridge inside, and three pictures next to it. One picture is a screenshot of Playback, a multiplatform companion app for the Operator range of devices, specifically, the screenshot of the game backup screen, with a backup file in progress of creating. Below is a photo of the GB Operator with the same cartridge next to a laptop currently running the game from the cartridge through the connected device, as well as three Playback screenshots of achievement lists from RetroAchievements for various Game Boy games. " title="A promo image for Epilogue's GB Operator, showing the Epilogue brand logo on the bottom right, a wireframe three side view of the GB Operator shell on the upper left, a picture of an actual GB Operator with a GBA cartridge inside, and three pictures next to it. One picture is a screenshot of Playback, a multiplatform companion app for the Operator range of devices, specifically, the screenshot of the game backup screen, with a backup file in progress of creating. Below is a photo of the GB Operator with the same cartridge next to a laptop currently running the game from the cartridge through the connected device, as well as three Playback screenshots of achievement lists from RetroAchievements for various Game Boy games.
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EGVroom @egvroom.bsky.social · 05/09/2026
ZERO is a Mode 7 racer for your Game Boy Color💨 Follow for dev updates🧑🏻‍💻 #screenshotSaturday #pixelart #indiedev #gameboy #retrogaming
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𝕠𝕓𝕛𝕖𝕥 𝕕𝕚𝕤𝕔𝕣𝕖𝕥 @objetdiscret.itch.io · 21/08/2026
I wrote a #devlog to talk about the development of Pixel Pup and Taiyaki Fabulous Test Kitchen: objetdiscret.itch.io/tai-fab-muse... I'm so excited that #PixelPup is out TODAY, and I'm looking forward to bringing you #TaiFab 2 later this year! 🎉 #GBA #GBC #IndieDev #GameDev #homebrew
objetdiscret.itch.io
Pixel Pup + TaiFab 2 News
Hello, Fishcross Islanders! If you're a TaiFab fan, you may be interested to hear about my current nonogram gamedev projects, Pixel Pup and Taiyaki Fabulous Test Kitchen. Pixel Pup Last year, I heard....
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retrodotcards.com @retrodotcards.com · 21/08/2026
Pixel Pup, a #picross style game for the #GBA is now available! There's a demo too. retrodotcards.itch.io/pixel-pup #indiedev #gameboy
retrodotcards.itch.io
Pixel Pup by RetroDotCards, objetdiscret
A nonogram game for the GBA
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CeL @xcelfr.bsky.social · 21/08/2026
We are proud to present our humble contribution to #GBAJam2026, created alongside @jptom.bsky.social msZ and @cyberdeous.bsky.social #gbadev #homebrew #indiegame xcelfr.itch.io/breakoid
xcelfr.itch.io
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Bucket Mouse @mousebitelabs.bsky.social · 18/08/2026
The new Game Boy Enhance model, the AGBM-02, is finally here! This is a replacement board for the AGBM-01, and uses AA batteries. For the uninitiated, my Game Boy Enhance design is a circuit-level recreation of the original GBA - it requires the use of the original CPU, so it's not emulation! 🧵
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gbdev.io @gbdev.io · 13/08/2026
#GBAJam2026 is brought to you in part by insideGadgets, our long-time jam sponsor and maker of high quality cartridges and other hardware for Game Boy and Game Boy Advance! Three jam winners will receive GBxCart RW, a device for backing up ROM data and rewriting flashcarts! shop.insidegadgets.com
A promotional image showcasing some of the products offered by insideGadgets, whose logo done in shades of grey is placed in the center. Top left picture has a batch of cartridges for Bulb!, a Game Boy game that takes advantage of custom hardware on the cart that makes it light up with the game. The carts are placed in clear plastic protector have yellow shells and are all fitted with a sticker with game's logo and cover artwork. Bottom left image shows a blue GBxCart RW with a GBA cartridge and a USB-C cable plugged in, ready to read the cart data. Top right image shows the same device in action through the FlashGBX app for Linux, shown on the screen in the background. Bottom right image has a pile of PCBs for custom GBA flashcarts with in-built rumble motors.
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Incube8 Games @incube8games.bsky.social · 07/08/2026
Let's try to catch a Banga (028/100)! All the catching phases in PachiPals are a Pinball game, have a look! Developer: Rebusmind (Dango Dash, Hidden Gems) #PachiPals #gbstudio #indiedev #gameboycolor
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retrodotcards.com @retrodotcards.com · 07/08/2026
Pixel Pup, a nonogram/picross game for the #GBA, will be available on August 21st. You'll be able to get it here: retrodotcards.itch.io/pixel-pup There will also be an updated demo.
retrodotcards.itch.io
Pixel Pup by RetroDotCards
A nonogram game for the GBA
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gbdev.io @gbdev.io · 06/08/2026
We're delighted to have @incube8games.bsky.social as our main sponsor of #GBAJam2026! They are known for releasing Infinity (GBC) two decades after inception, Dracula: Dark Reign, the first Stoker family-authorized Dracula game, and Discrete Orange, one of the GBA Jam '24 winners! incube8games.com
A promotional picture showcasing Incube8 Games logo on as well as pictures of physical releases and screenshots of games they published mentioned in the post. From left to right - Infinity (Game Boy Color), Dracula: Dark Reign (Game Boy Color), Discrete Orange (Game Boy Advance). Each physical release has a cardboard box with holographic embossing, game cartridge in a protective case, an instruction manual and a sticker sheet pictured for it, as well as a single screenshot for each game in front of the photos.
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bbbbbr @bbbbbr.bsky.social · 05/08/2026
The legendary #Workboy found a new home! I ported the ROM to work on the #MegaDuck laptop (a #GameBoy clone). Not the hardware we wanted, but...it's hardware that exists! Keyboard, Real Time Clock and all. Free #DuckDuckWorkboy #rompatch on the itch page: bbbbbr.itch.io/mega-duck-pa... #romhacking
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adam le doux @adamledoux.net · 03/08/2026
i open-sourced two GBA game engines! <3 blog.adamledoux.net/posts/2026-0...
blog.adamledoux.net
two GBA game engines
i just released two GBA engines on codeberg!
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Bucket Mouse @mousebitelabs.bsky.social · 12/06/2026
Happy 25th birthday, Game Boy Advance! To celebrate, I am happy to announce the Game Boy Enhance is FINALLY here! The Game Boy Enhance (AGBM) is a circuit-level recreation of the Game Boy Advance. It uses almost all-new components, but still uses the original CPU - it's not emulation!
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EGVroom @egvroom.bsky.social · 01/07/2026
'WOLF' the Game Boy Raycaster gameplay🐺 #indiedev #gameboy #GBDK2020 #retrogaming #gbstudio #pixelartㅤㅤㅤㅤ
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Chris Graue {Lo(u)ser} @chrisgraue.com · 30/03/2026
I used my game boy camera to take a photo of Jupiter using the Mount Wilson 60 inch telescope. Literally, it discovered the Milky Way, and now I use it to take the lowest resolution astrophotography ever. Full process video here: youtube.com/shorts/cS0Mu...
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gbdev.io @gbdev.io · 12/06/2026
A new GBA Jam is about to hit the ground! Three months to make anything cool running on a Game Boy Advance, awesome prizes to win! Submission period starts this weekend, hope to have you on board! #GBAJam26 Join the jam at itch.io/jam/gbajam26 Hang out with us on Discord/IRC: gbadev.net/chat.html
GBA Jam 2026 logo done in chipped and dripping graffiti paint style in front of an exploding Game Boy Advance cartridge, with a flurry of blue and purple paint specs behind it on a solid black background.
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gbdev.io @gbdev.io · 09/06/2026
Revamped page on Pan Docs: gbdev.io/pandocs/Pale... (with a shiny new diagram!)
gbdev.io
Palettes
The single, most comprehensive technical reference to Game Boy available to the public.
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Tony Wang @wangrenxin.bsky.social · 24/04/2026
GB BASIC v1.9 is live. The compiler gains constant folding, improved macros, optimized expressions, conditional compilation, compile‑time diagnostics, single‑line loop, plus misc fixes store.steampowered.com/app/2308700/ #gbbasic #gameboy #gamedev #gbdev #indiedev
store.steampowered.com
GB BASIC on Steam
GameBuilder BASIC (GB BASIC) is a retro Fantasy Console that generates ROMs compatible with the popular handheld game console.
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Tony Wang @wangrenxin.bsky.social · 22/05/2026
The SFC/SNES mouse driver is now live with GB BASIC v1.10! Provided as a standalone external kernel, requires the mouse plugged into Port 2 and SGB features enabled in your project. Fully supports SGB1&2. Thanks to @bbbbbr.bsky.social for the open-source code! #gbbasic #gbdev #gamedev #indiedev
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gbdev.io @gbdev.io · 26/05/2026
Time for some wrapping up for GB Compo 25! youtu.be/JI5649nTCJQ #gbcompo25 #gbcompo
youtu.be
Highlights from the 2025 Game Boy game jam - GB Compo 25
YouTube video by David Couzelis
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bbbbbr @bbbbbr.bsky.social · 23/05/2026
Cool to see another project making use of the SFC/SNES mouse on the Suepr Game Boy! Hope to see some GBBasic projects that use it. Also credit to vinheim3 for the original SGB mouse patches and concept.
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Tony Wang @wangrenxin.bsky.social · 22/05/2026
The cartridge rumble driver is now live with GB BASIC v1.10! Powered by a dedicated native function, it supports MBC5 compatible cartridges with rumble. #gbbasic #gameboy #gamedev #gbdev #indiedev
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Tardigrade @robertglucose.bsky.social · 17/05/2026
Double Duck, my latest Game Boy Color game, is now available for free! 🦆-🦆 www.youtube.com/watch?v=7fIs... tardigrade-nx.itch.io/double-duck
youtube.com
Double Duck, my upcoming Game Boy Color game
YouTube video by Robert Glucose
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Game Boy Scene @gameboyscene.bsky.social · 08/05/2026
RT @mofosyne@mastodon.social " cameraclub.gbdev.io/uzine2026/ New drop for the #GameboyCamera Community! It's the second edition of the #Gameboy Camera Club uZine! Print, cut and fold for you to have your very own super tiny photo gallery microzine! " src: mastodon.social/@mofosyne/11...
mastodon.social
mofosyne (@mofosyne@mastodon.social)
Attached: 1 image https://cameraclub.gbdev.io/uzine2026/ New drop for the Gameboy Camera Community! It's the second edition of the Gameboy Camera Club uZine! Print, cut and fold for you to have yo...
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pkostic @ratpaperscissors.com · 09/05/2026
Just released GBC Limitations Tools v1.1 2 #aseprite Lua scripts for #GBStudio / GBC dev GBC Tile Tool - palette & tilemap analysis GBC Actor Tool - helps with 4+ color actors: chooses palettes and exports new sprite sheets github.com/pkostic-dev/aseprite-gbc-limitations #gamedev
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Incube8 Games @incube8games.bsky.social · 10/05/2026
🗡️ PRE-ORDERS ARE OPEN 🗡️ 🦇 Dracula: Dark Reign for Game Boy Color Don't forget to reload! Holmwood and Harker can use guns! loom.ly/lNKH6qM Standard Edition ($49.99) Digital Edition (available now - $14.99)
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retrodotcards.com @retrodotcards.com · 04/05/2026
I wrote a blog post on adding link cable support to a GBA game with afska's awesome gba-link-connection library. www.mattgreer.dev/blog/gba-dev...
mattgreer.dev
Game Boy Advance Dev: Link Cable Networking
How to get the link cable going for multiplayer on the Game Boy Advance
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retrodotcards.com @retrodotcards.com · 30/04/2026
Alright, two player mode is off to a great start.
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KAIMAN GAMES @kaimangames.bsky.social · 02/05/2026
A glimpse of the level art from Skateland Adventures, our new Game Boy Color game, now on its second day on Kickstarter. Let's skate together. 🌴🎶🐌🛹🐢 www.kickstarter.com/projects/kai... #gbc #retrodev #kickstarter #8bit #gameboy #indiegames #gb #zgb #retrogame
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gbdev.io @gbdev.io · 28/04/2026
#GBADev Discord server showcase via Gronis: "[...] I made the text system of my game less rigid unlike typical games from the gba era. So now, just to try it out, I made some talking butterflies 🙂" gronis93.itch.io/project-pag #GameBoyAdvance
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retrodotcards.com @retrodotcards.com · 28/04/2026
The Pixel Pup early release demo just got a bug fix. More details, and the new version to download, here: city41.itch.io/pixel-pup-de...
city41.itch.io
Early release bug fix
The early release demo of Pixel Pup had a pretty bad bug in it. So we have uploaded a new version that fixes it. If you used a hint, and that hint ended up solving the puzzle (because it filled in all...
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Game Boy Scene @gameboyscene.bsky.social · 22/04/2026
Second place #gbcompo25 winner "Fortune & Glory" has kickstarter for #GameBoy physical release and digital option "quadrupling its size and adding an additional playable character as well as detailed cutscenes" www.kickstarter.com/projects/mat... Demo: videogamestorytime.itch.io/fortune-and-...
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gbdev.io @gbdev.io · 22/04/2026
screenshake farm is a developer collective promoting sustainable and environmentally friendly video game development through #GBADev using AGBRS. Check out their games on itch at screenshake-farm.itch.io or Steam at store.steampowered.com/app/3023400/... #GameBoyAdvance #Rust
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Game Boy Scene @gameboyscene.bsky.social · 22/04/2026
#GBStudio maker @chrismaltby.com releases standalone web #chiptune music tracker for #GameBoy with improvements, offline and midi input. It is #hugedriver format. Try at music.gbstudio.dev From post chrismaltby.itch.io/gb-studio/de...
music.gbstudio.dev
GBS Music
GBS Music is a chiptune music editor by the creators of GB Studio.
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gbdev.io @gbdev.io · 15/04/2026
Check out Timebeat, a time travel-themed rhythm game that fits on a 32kB cartridge, made by Daniel R. and Jonathan M. using RGBDS. carlossss111.itch.io/timebeat #GBDev #GameBoy #RGBDS
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embedded-ideas.de @embedded-ideas.de · 13/04/2026
New post: The Open xGB Display (OXD) A modular TFT driver board for Game Boy Color & Game Boy Advance IPS mods with optional USB video output. Built as a reusable platform for display mods. Fully open source. #openxgbdisplay #retrogaming #oshw #gameboycolor www.embedded-ideas.de/posts/260413...
embedded-ideas.de
The Open xGB Display – A Development Board for Game Boy Color and Game Boy Advance IPS Mods
The Open xGB Display (OXD) is a TFT driver board for Game Boy Color and Game Boy Advance systems with USB video output. It is designed as a modular platform for display mods and supports a range of RG...
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Damian Yerrick @pineight.com · 14/04/2026
When developing an emulator, it's easier to tell what's going on in a game's code if you include a disassembly in the trace log. youtu.be/G4p6gtnSwmw #FamilySizeVM #emudev #NESdev #timelapse #emulator
youtu.be
Tracing with a 6502 disassembler (Family Size VM #11)
YouTube video by Damian Yerrick
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Costélinha (Não sei quando vou abrir encomendas de novo kskkks) @costelinhadougref.bsky.social · 05/04/2026
Took me a lot of trial and error and asking on discord to get this working. If you're wondering what is this white bar from which enemies disappear underneath, that's where the HUD will be. #gamedev #braziliangamedev #indiegamedev #retrogamedev #homebrew #gameboy #assembly #assemblylanguage
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gbdev.io @gbdev.io · 08/04/2026
If you missed its release this March, check out this WarioWare-like collection of microgames for the GBA put together by a group of students and their teacher at Green River College as part of their software development course! github.com/grc-cohort-2... #GBADev
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Tony Wang @wangrenxin.bsky.social · 24/03/2026
GB BASIC v1.8.1 is live now. This update enhanced the map editor, along with tiles and actor assets analysis features. It also improves editor usability and fixes known issues. store.steampowered.com/app/2308700/ #gbbasic #gameboy #gbdev #gamedev #indiedev
store.steampowered.com
GB BASIC on Steam
GameBuilder BASIC (GB BASIC) is a retro Fantasy Console that generates ROMs compatible with the popular handheld game console.
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Tony Wang @wangrenxin.bsky.social · 04/04/2026
RAM MON is a GB BASIC program runs on GameBoy, which allows it to read and write to the memory bus directly github.com/paladin-t/ra... #gbbasic #gbdev #gameboy #gamedev #homebrew
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Nova @novasquirrel.com · 03/04/2026
I took the Super Game Boy code I made for Petal Crash GBC and made a code example that shows off booting custom SNES code and then having the Game Boy side send files to the SNES as needed. Code and ROM (under "releases"): code.novasquirrel.com/Maffi/SuperG... #snesdev #gbdev #gamedev
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Game Boy Scene @gameboyscene.bsky.social · 05/04/2026
RT: Kuddel @KuestenKeks@social.tchncs.de (mastodon) "Oh neat, GB Studio Central hosts a #GameBoyCamera Jam in May! The results will published as a Game Boy Rom :) Looking forward to this :D itch.io/jam/gb-camer... " src: social.tchncs.de/@KuestenKeks... #gameboy #pixelart #photography #retrogaming
itch.io
GB Camera Jam '26
A game jam from 2026-05-01 to 2026-05-10 hosted by GB Studio Central, Bad_Dad & Scratching Post Studio by Cat Graffam. Game Boy Camera Lovers! What was once the world's smallest digital camera (Guinne...
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