Fredrik Ahlström
@therealflubba.bsky.social
GBA/NDS Emulator author
Reposted by Fredrik Ahlström
Happy anniversary to the Phantasy Star series! ⭐
I just wanted to redraw that title screen.
I just wanted to redraw that title screen.
December 20, 2025 at 12:45 AM
Happy anniversary to the Phantasy Star series! ⭐
I just wanted to redraw that title screen.
I just wanted to redraw that title screen.
Reposted by Fredrik Ahlström
Our first big Christmas update is with an amazing recovery of the final build of Resident Evil on Gameboy Color. Hotgen's impressive conversion that got canned. This is much closer to completion, and seems completable too. Lots to discover!
www.gamesthatwerent.com/2025/12/resi...
www.gamesthatwerent.com/2025/12/resi...
December 17, 2025 at 9:04 AM
Our first big Christmas update is with an amazing recovery of the final build of Resident Evil on Gameboy Color. Hotgen's impressive conversion that got canned. This is much closer to completion, and seems completable too. Lots to discover!
www.gamesthatwerent.com/2025/12/resi...
www.gamesthatwerent.com/2025/12/resi...
Reposted by Fredrik Ahlström
Okay, here goes: what would *you* like to see in a retro "no-code/low-code" game creation tool? What tools/principles do you find helpful or interesting? I'm tempted to try making one of my own. (Assume WS/WSC for now, but don't constrain yourself!)
December 10, 2025 at 8:15 PM
Okay, here goes: what would *you* like to see in a retro "no-code/low-code" game creation tool? What tools/principles do you find helpful or interesting? I'm tempted to try making one of my own. (Assume WS/WSC for now, but don't constrain yourself!)
Reposted by Fredrik Ahlström
New blog post: Wonderful Toolchain project update - November 2025, with the latest in my efforts to make the niche handheld more convenient to develop and share homebrew games for.
blog.asie.pl/2025/11/wond...
blog.asie.pl/2025/11/wond...
Wonderful Toolchain project update - November 2025
Here’s what I’ve been tinkering with for the past two months with the Wonderful toolchain.
WonderSwan improvements The main focus of my work in autumn was improving the wswan and wwitch targets. Let’s...
blog.asie.pl
November 30, 2025 at 2:53 PM
New blog post: Wonderful Toolchain project update - November 2025, with the latest in my efforts to make the niche handheld more convenient to develop and share homebrew games for.
blog.asie.pl/2025/11/wond...
blog.asie.pl/2025/11/wond...
Preparing to show something at Compusphere
November 29, 2025 at 6:35 PM
Preparing to show something at Compusphere
Reposted by Fredrik Ahlström
RGBDS 1.0.0 was released! 🥳
(and from now on, RGBDS will adhere to semantic versioning)
github.com/gbdev/rgbds/...
(and from now on, RGBDS will adhere to semantic versioning)
github.com/gbdev/rgbds/...
Release v1.0.0 · gbdev/rgbds
Happy Halloween! 🎃
We've finally hit a big milestone: the first major version increment, from 0.x to 1.0.0! 🥳
From now on RGBDS will adhere to semantic versioning ("semver"), meaning that you can r...
github.com
November 14, 2025 at 6:56 PM
RGBDS 1.0.0 was released! 🥳
(and from now on, RGBDS will adhere to semantic versioning)
github.com/gbdev/rgbds/...
(and from now on, RGBDS will adhere to semantic versioning)
github.com/gbdev/rgbds/...
Reposted by Fredrik Ahlström
Mixing SH4 ASM, C23, and C++23 together within the same hardware accelerated linear algebra library for the Sega Dreamcast (which also runs unit tests on real HW) with the hopes of democratizing the upper performance echelons of what the SH4 FPU is capable of...
#gamedev #retrocomputing #cplusplus
#gamedev #retrocomputing #cplusplus
November 13, 2025 at 2:01 PM
Mixing SH4 ASM, C23, and C++23 together within the same hardware accelerated linear algebra library for the Sega Dreamcast (which also runs unit tests on real HW) with the hopes of democratizing the upper performance echelons of what the SH4 FPU is capable of...
#gamedev #retrocomputing #cplusplus
#gamedev #retrocomputing #cplusplus
Reposted by Fredrik Ahlström
It's time for the second annual DreamDisc #gamejam for the Sega Dreamcast! We have prebuilt frameworks and libs such as #raylib and #sdl for developers of any experience level. Top 10 entries get published to a physical DC disc release!
orcface.com/events/02-dr...
#gamedev #indiegame #retrogaming
orcface.com/events/02-dr...
#gamedev #indiegame #retrogaming
November 11, 2025 at 7:54 PM
It's time for the second annual DreamDisc #gamejam for the Sega Dreamcast! We have prebuilt frameworks and libs such as #raylib and #sdl for developers of any experience level. Top 10 entries get published to a physical DC disc release!
orcface.com/events/02-dr...
#gamedev #indiegame #retrogaming
orcface.com/events/02-dr...
#gamedev #indiegame #retrogaming
Reposted by Fredrik Ahlström
New release of the NDS music tracker fork, NitrousTracker! Version 0.5.0 brings theming support and significant stability improvements. Here are a few themes provided by the feature's contributor, prayerie, for this release - with more to come!
github.com/NitrousTrack...
github.com/NitrousTrack...
November 11, 2025 at 9:46 PM
New release of the NDS music tracker fork, NitrousTracker! Version 0.5.0 brings theming support and significant stability improvements. Here are a few themes provided by the feature's contributor, prayerie, for this release - with more to come!
github.com/NitrousTrack...
github.com/NitrousTrack...
Reposted by Fredrik Ahlström
For users of the WS Flash Masta, CartFriend has received some quick updates as I pull in improvements to the WWitch support binaries which I've been developing over the past few weeks. Enjoy!
github.com/asiekierka/w...
github.com/asiekierka/w...
Release CartFriend 0.2.7 · asiekierka/ws-cartfriend
Update AthenaBIOS to 0.1.3.
github.com
November 4, 2025 at 9:06 PM
For users of the WS Flash Masta, CartFriend has received some quick updates as I pull in improvements to the WWitch support binaries which I've been developing over the past few weeks. Enjoy!
github.com/asiekierka/w...
github.com/asiekierka/w...
Reposted by Fredrik Ahlström
Reposted by Fredrik Ahlström
I've spent the last two years developing firmware and software for a WS/WSC/PCv2 flash/development cartridge. Now, it has finally been announced and will be sold by 49bitcat in Germany. Sales start November 24th!
Learn more here: 49bitcat.com/news/2025-10...
Learn more here: 49bitcat.com/news/2025-10...
October 31, 2025 at 6:23 AM
I've spent the last two years developing firmware and software for a WS/WSC/PCv2 flash/development cartridge. Now, it has finally been announced and will be sold by 49bitcat in Germany. Sales start November 24th!
Learn more here: 49bitcat.com/news/2025-10...
Learn more here: 49bitcat.com/news/2025-10...
Reposted by Fredrik Ahlström
Cuebus preserved DoDonPuchi Zero (ドドンプチ零) and a trial version of DoDonPuchi (ドドンプチ)! Released in 2003, DoDonPuchi Zero was CAVE's first original shooter for keitai. Both were lost to time until now! DoDonPuchi Zero's soundtrack was composed by Namiki Manabu.
October 27, 2025 at 10:09 PM
Cuebus preserved DoDonPuchi Zero (ドドンプチ零) and a trial version of DoDonPuchi (ドドンプチ)! Released in 2003, DoDonPuchi Zero was CAVE's first original shooter for keitai. Both were lost to time until now! DoDonPuchi Zero's soundtrack was composed by Namiki Manabu.
Reposted by Fredrik Ahlström
The King of Fighters: Battle de Paradise - English translation is now available!
Enjoy this KOF board game with lots of references to the series, in English for the first time in 25 years!
Download: www.marcrobledo.com/neo-geo-pock...
#KingOfFighters #NeoGeoPocket #KingOfFighters
Enjoy this KOF board game with lots of references to the series, in English for the first time in 25 years!
Download: www.marcrobledo.com/neo-geo-pock...
#KingOfFighters #NeoGeoPocket #KingOfFighters
October 28, 2025 at 4:00 PM
The King of Fighters: Battle de Paradise - English translation is now available!
Enjoy this KOF board game with lots of references to the series, in English for the first time in 25 years!
Download: www.marcrobledo.com/neo-geo-pock...
#KingOfFighters #NeoGeoPocket #KingOfFighters
Enjoy this KOF board game with lots of references to the series, in English for the first time in 25 years!
Download: www.marcrobledo.com/neo-geo-pock...
#KingOfFighters #NeoGeoPocket #KingOfFighters
Reposted by Fredrik Ahlström
more #godot fun, added procedural-ish grass that reacts to the player, sky and also a rock giant #indiedev #gamedev #indiegame
October 24, 2025 at 12:57 PM
more #godot fun, added procedural-ish grass that reacts to the player, sky and also a rock giant #indiedev #gamedev #indiegame
Reposted by Fredrik Ahlström
The final installment of my "make a Game Boy emulator" series is out! I cover audio, memory, and timing this time youtu.be/Be5v8E21pEQ
Despite me claiming I don't understand #GameBoy audio, making this video ended up tricking me into starting learning about it!
Despite me claiming I don't understand #GameBoy audio, making this video ended up tricking me into starting learning about it!
Make a Game Boy Emulator: Audio, Memory, and Timing
YouTube video by System of Levers
youtu.be
October 17, 2025 at 4:40 PM
The final installment of my "make a Game Boy emulator" series is out! I cover audio, memory, and timing this time youtu.be/Be5v8E21pEQ
Despite me claiming I don't understand #GameBoy audio, making this video ended up tricking me into starting learning about it!
Despite me claiming I don't understand #GameBoy audio, making this video ended up tricking me into starting learning about it!
Reposted by Fredrik Ahlström
While developing the translation tools for King of Fighters: Battle de Paradise, I was able to extract these beautiful pixel art screens, without the overlay graphics that the game doesn't allow you to remove :-)
#KingOfFighters #NeoGeoPocket #RomHacking
#KingOfFighters #NeoGeoPocket #RomHacking
October 16, 2025 at 4:56 PM
While developing the translation tools for King of Fighters: Battle de Paradise, I was able to extract these beautiful pixel art screens, without the overlay graphics that the game doesn't allow you to remove :-)
#KingOfFighters #NeoGeoPocket #RomHacking
#KingOfFighters #NeoGeoPocket #RomHacking
Reposted by Fredrik Ahlström
Satellaview+ deserves more attention: an emulator-based (so far) recreation of the '90s service that let players download games to their Super Famicoms via satellite. Today there's a big SFC in the in-game town in honor of the console's 35th birthday and last month they added a damn Spirit Halloween
November 21, 2024 at 8:27 PM
Satellaview+ deserves more attention: an emulator-based (so far) recreation of the '90s service that let players download games to their Super Famicoms via satellite. Today there's a big SFC in the in-game town in honor of the console's 35th birthday and last month they added a damn Spirit Halloween
Reposted by Fredrik Ahlström
Bomb Hunter, a Minesweeper clone for the Nintendo GBA E-Reader, is now open source.
#indiedev #gamedev #retrodev #homebrew #opensource
github.com/city41/eread...
#indiedev #gamedev #retrodev #homebrew #opensource
github.com/city41/eread...
GitHub - city41/ereader-bomb-hunter: A Minesweeper clone for the Nintendo GBA E-Reader
A Minesweeper clone for the Nintendo GBA E-Reader. Contribute to city41/ereader-bomb-hunter development by creating an account on GitHub.
github.com
September 19, 2025 at 10:33 PM
Bomb Hunter, a Minesweeper clone for the Nintendo GBA E-Reader, is now open source.
#indiedev #gamedev #retrodev #homebrew #opensource
github.com/city41/eread...
#indiedev #gamedev #retrodev #homebrew #opensource
github.com/city41/eread...
Reposted by Fredrik Ahlström
Found this while cleaning out the basement at a family member’s house. Any of my computer buddies here on bsky use one before?
September 17, 2025 at 2:26 AM
Found this while cleaning out the basement at a family member’s house. Any of my computer buddies here on bsky use one before?
Reposted by Fredrik Ahlström
Phantasy Star is a vital RPG from the 8-bit era, and one that, thanks to its Sega Ages treatment, is worth your time today, even if you're the kind of person who shies away from this era of role-playing game. Especially if, really.
Retro Spotlight: Phantasy Star
The original Phantasy Star is very much an old-school JRPG even in its more updated forms, but it remains a piece of genre history worth experiencing.
retroxp.beehiiv.com
August 21, 2025 at 11:55 AM
Phantasy Star is a vital RPG from the 8-bit era, and one that, thanks to its Sega Ages treatment, is worth your time today, even if you're the kind of person who shies away from this era of role-playing game. Especially if, really.
Some edge case fixes for NitroSwan my WonderSwan emulator.
github.com/FluBBaOfWard...
github.com/FluBBaOfWard...
Release V0.7.4 · FluBBaOfWard/NitroSwan
Fixed reading of channel 3 frequency.
Fixed ADPCM decoding for the Karnak chip.
Fixed use of Karnak mapper chip on WS/WSC.
Fixed parsing of header on small ROMs.
github.com
August 8, 2025 at 9:24 AM
Some edge case fixes for NitroSwan my WonderSwan emulator.
github.com/FluBBaOfWard...
github.com/FluBBaOfWard...
Reposted by Fredrik Ahlström
When you have a sudden epiphany about pipelining single vector-by-matrix transforms for the Sega Dreamcast's SH4 CPU at 3AM and have to grab a notebook...
#retrocomputing #dreamcast #optimization #gamedev
#retrocomputing #dreamcast #optimization #gamedev
July 20, 2025 at 9:31 PM
When you have a sudden epiphany about pipelining single vector-by-matrix transforms for the Sega Dreamcast's SH4 CPU at 3AM and have to grab a notebook...
#retrocomputing #dreamcast #optimization #gamedev
#retrocomputing #dreamcast #optimization #gamedev
Reposted by Fredrik Ahlström
I made a quick comparison of WonderSwan emulators' accuracy based on test ROMs the other day. (Mesen has already fixed most of the issues this has found, FWIW)
wiki.asie.pl/doku.php?id=...
wiki.asie.pl/doku.php?id=...
notes:wonderswan:accuracy_tests [asie's personal wiki]
wiki.asie.pl
July 14, 2025 at 5:51 AM
I made a quick comparison of WonderSwan emulators' accuracy based on test ROMs the other day. (Mesen has already fixed most of the issues this has found, FWIW)
wiki.asie.pl/doku.php?id=...
wiki.asie.pl/doku.php?id=...