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SUDDEN・DESU

@sudden-desu.net
2.2K followers 89 following 598 posts

レトロゲームを逆アセンブルして調査。メガCD開発キットMEGADEVを作成した。 Retro game disassemblies/research and Megadev, a Mega CD SDK. Occasional posts about life in Japan. 🔗 sudden-desu.net 🎉 patreon.com/SUDDENDESU

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SUDDEN・DESU @sudden-desu.net · 4h
Nah it looks like others found it first over on freestepdodge.com whch is kind of the epicenter of DOA hacking.
freestepdodge.com
Free Step Dodge
A Dead or Alive community forum for players who enjoy the series of Dead or Alive.
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SUDDEN・DESU @sudden-desu.net · 02/10/2026
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SUDDEN・DESU @sudden-desu.net · 02/10/2026
Not exactly easy to restore.
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SUDDEN・DESU @sudden-desu.net · 02/10/2026
And what if I told you there was a Indian girl character planned for DOA2? And that (some of) her data is still present in the older DC prototype dumps?
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SUDDEN・DESU @sudden-desu.net · 02/10/2026
In the image from the first post: to the left, HISAHI Suzuki (with glasses) and SUZUKI Yū; Mark Cerny to the right next to Spielberg, and ŌGUCHI Hisao on the other side; at the game cabinet are KUMAGAI Mie and Spielberg's son.
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SUDDEN・DESU @sudden-desu.net · 02/10/2026
When we showed Spielberg *Virtua Fighter RPG*, still at the prototype stage, he reacted with something like 'Wonderful!'… Nakayama-san was pleased by that and ordered full-scale development." - SUZUKI Hisashi, "Video Game no Kataribe-tachi", pp. 150-151
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SUDDEN・DESU @sudden-desu.net · 02/10/2026
Reminder that Shenmue only exists because of Steven Spielberg: "Spielberg toured Sega when he came to Japan on a film promotion tour, I think. He had a game company too, GameWorks. President Nakayama led, and we went round the development floor together." (1/3)
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sam raimi's DRAG ME TOO KELL @kellygoround.bsky.social · 27/09/2026
real cab viable secret flicky!
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Jo-eek! ‘Dead-chibe' W. 👻 @thestacks.ca · 28/09/2026
SEGAPOLIS [セガポリス]/Gamest Mook [ゲーメストムック] Vol. 45 has been scanned and archived thanks to a donation from @sudden-desu.net Please enjoy! archive.org/details/SEGA...
SEGAPOLIS [セガポリス]/Gamest Mook [ゲーメストムック] Vol. 45
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SUDDEN・DESU @sudden-desu.net · 30/09/2026
Patreon members get early access to MAME cheats and findings and previews of upcoming articles. At $1/month, it's a cheap way to say thanks for the time and money it takes to do the research and write the articles. www.patreon.com/SUDDENDESU
patreon.com
SUDDEN DESU — Retrogame Disassemblies, Digital Archaeology, Data Preservation
Get more from SUDDEN DESU on Patreon. Retrogame Disassemblies, Digital Archaeology, Data Preservation. Support SUDDEN DESU and get exclusive access to their work.
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SUDDEN・DESU @sudden-desu.net · 30/09/2026
New Patreon article up! OOPARTS has a debug tool hidden away with features like stage skip, pause, and perhaps most useful, a ball steering function. MAME cheats included in the post so you can give it a try yourself! 👇👇 www.patreon.com/SUDDENDESU/p...
patreon.com
OOPARTS - Debug Tools | SUDDEN DESU
OOFARTS OOPARTS was an unreleased block kuzushi game for Sega C2 arcade hardware, featuring sexy sorceresses illustrated by the legendary TA
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SUDDEN・DESU @sudden-desu.net · 24/09/2026
I haven't advertised this in a while so: I also run a blog about Japanese bubble era (1980s to early 90s) aesthetics. If you enjoy retro Japanese style, consumerism, and pop culture (which presumably you do if you follow this account), check out BUBBLISM here: bubblism.jp
bubblism.jp
𝘉𝘜𝘉𝘉𝘓𝘐𝘚𝘔・Japanese pop style in the bubble era
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SUDDEN・DESU @sudden-desu.net · 22/09/2026
MAME really is the goddamn best emulator ever made.
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SUDDEN・DESU @sudden-desu.net · 19/09/2026
Man, prototype Pai was cute with the blush marks and smile. Final version included for reference.
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Game Preservation Society @gamepresint.bsky.social · 19/09/2026
Japan's golden age of gaming, from our archive. This week: Schwarzschild (PC-88SR, ©Kogado 1988) — a strategy game built as a story, where a small star-nation's young king gathers allies to survive a war engulfing the galaxy. www.patreon.com/gamepres/pos...
patreon.com
Game Preservation Society — We're saving Japanese Video Games!
Get more from Game Preservation Society on Patreon. We're saving Japanese Video Games!. Support Game Preservation Society and get exclusive access to their work.
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Jtduckman @jtduckman.bsky.social · 19/09/2026
the virtua racing game over always gave me a sorta astral-ascension type vibe, as if its the games way to gently return you back to reality
static.klipy.com
SpongeBob's Mysterious Ascension
ALT: SpongeBob's Mysterious Ascension
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SUDDEN・DESU @sudden-desu.net · 19/09/2026
Mentaiko spaghetti for lunch, probably my favorite quick, “dump it all together and eat” food
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SUDDEN・DESU @sudden-desu.net · 19/09/2026
Tired: DAY-TOOO-NAAAAAAAAA Wired: GAAAaaaaaame OOO-BAaaaaaa........
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SUDDEN・DESU @sudden-desu.net · 18/09/2026
Really wish they had actually used those colorful, fun typefaces/logos in Virtua Racing...
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SUDDEN・DESU @sudden-desu.net · 18/09/2026
Was going through my many binders of Sega paperwork for more Virtua Fighter research (shocking.), when I saw this... Hey wait, 1993 is way too early for Sonic the Fighters... Ahh, it's actually an earlier name for SegaSonic Cosmo Fighter. (oh and there's Virtua Fighters at the top.)
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SUDDEN・DESU @sudden-desu.net · 17/09/2026
3人合わせてパ○ュームです!
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SUDDEN・DESU @sudden-desu.net · 17/09/2026
Part of the Virtua Fighter research, believe it or not...
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SUDDEN・DESU @sudden-desu.net · 17/09/2026
in case you forgot where the cool kids hang out
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SUDDEN・DESU @sudden-desu.net · 17/09/2026
Hmmmm.....
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SUDDEN・DESU @sudden-desu.net · 17/09/2026
And thee Megalo 50's off in the corner there, probably with Virtua Fighters....
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ikaringo @ikaringo4444.bsky.social · 17/09/2026
ライヤ #闘姫伝承
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SUDDEN・DESU @sudden-desu.net · 17/09/2026
Can you just imagine seeing Virtua Formula on the floor at AOU 1993? How mindblowing that must have been? What a setup. What a force Sega used to be...
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SUDDEN・DESU @sudden-desu.net · 17/09/2026
You know what? The internet is a free place. I take it back, copy whatever you want to TCRF, as much as you want.
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SUDDEN・DESU @sudden-desu.net · 17/09/2026
I guess if we're gonna have a typhoon *again*, may as well be when the kids are home from school anyway...
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The Japan Times @japantimes.co.jp · 17/09/2026
Tropical Storm Dujuan may bring rainfall during the Silver Week holidays next week, putting a damper on vacation plans.
ebx.sh
Tropical Storm Dujuan may hit Japan over upcoming Silver Week holiday
Rain is expected over the rare five-day holiday — an alignment that has not occurred in 11 years — putting a damper on vacation plans.
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SUDDEN・DESU @sudden-desu.net · 16/09/2026
New Patreon post up! I'm super, super excited for this one: Virtua Fighter has some real interesting stuff hidden away, including some substantial remnants of its "Barcode Battler" mode that used an actual barcode reader. Check it out! 👇 www.patreon.com/SUDDENDESU/p...
patreon.com
Virtrua Fighter: Barcodes, Debug Tools, Tournament/League Mode, and more... | SUDDEN DESU
A barcode scanner on a fighting game...?
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Dave@Not-Convention Recovery @sasuraiger.bsky.social · 16/09/2026
gamesoftrobo.ghost.io/super-real-m... "So throughout, Venus Returns is kind of shocking. Not at all in terms of its sexual content— which is again quite tame— but in terms of the level of detail, the pains taken, the way you can hear buttons unfastening. Turns out video games *are* art, after all."
gamesoftrobo.ghost.io
Super Real Mahjong: Venus Returns delivers the quaint nudity of another age
So throughout, Venus Returns is kind of shocking. Not at all in terms of its sexual content— which is again quite tame— but in terms of the level of detail, the pains taken, the way you can actually h...
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SUDDEN・DESU @sudden-desu.net · 16/09/2026
たしかにメガ○ライブだったらマウス代わりにヘッジホッグを使うのは当然だよ。 (ふせ字にしなくていいってば…)
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SUDDEN・DESU @sudden-desu.net · 16/09/2026
What a day, time for a bourbon.
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SUDDEN・DESU @sudden-desu.net · 16/09/2026
New Patreon post up! I'm super, super excited for this one: Virtua Fighter has some real interesting stuff hidden away, including some substantial remnants of its "Barcode Battler" mode that used an actual barcode reader. Check it out! 👇 www.patreon.com/SUDDENDESU/p...
patreon.com
Virtrua Fighter: Barcodes, Debug Tools, Tournament/League Mode, and more... | SUDDEN DESU
A barcode scanner on a fighting game...?
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SUDDEN・DESU @sudden-desu.net · 16/09/2026
Wow, lots of mail arriving today... - Kat's Run - Need the manual for research on an upcoming arctle - VF Maniax... for an upcoming article. - Yume Kōjō 87 Zenkiroku, with its high quality images of the early Sega Mach Vision, for Sega Retro
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SUDDEN・DESU @sudden-desu.net · 16/09/2026
Oh man, the best thing about preorders is completely forgetting about them, and then getting a surprise in the mail months later!
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SUDDEN・DESU @sudden-desu.net · 16/09/2026
contributions attributed to others, but if I deleted something from someone else, that was certainly accidental. The banning of the account was entirely expected.
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SUDDEN・DESU @sudden-desu.net · 16/09/2026
Well obviously I can't read something on a site i was banned from, so I don't know what was written. That said I was aiming to remove only the sections that were specifically linked to my site, my twitter, or my name, regardless of which account wrote it. I tried to specifically work around...
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SUDDEN・DESU @sudden-desu.net · 15/09/2026
The background and sprite art in Sailor Moon arcade is really gorgeous...
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SUDDEN・DESU @sudden-desu.net · 15/09/2026
AI is a tool for assisting with research, but it's still a stupid, dumb machine. The results must be interpreted, corrected, ultimately be presented by a human. That is the only thing AI really excels at: finding patterns in a mass of data. And that maps perfectly to reverse engineering work.
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SUDDEN・DESU @sudden-desu.net · 15/09/2026
LLMs can be used for generative AI, sure. If we're going to be super broad in our definition, then any output at all is "generated" by the AI. If that is your definition, then there isn't anything to discuss. My definition is AI slop - the output from an AI presented directly as "content."
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SUDDEN・DESU @sudden-desu.net · 15/09/2026
Overreaction, perhaps, but if they're allowed to take a stance then I don't see why I can't. Doing plenty of other things, check my posts. ;)
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SUDDEN・DESU @sudden-desu.net · 15/09/2026
Tell me more, this is fascinating!
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SUDDEN・DESU @sudden-desu.net · 15/09/2026
The color behind the TIME icon in Virtua Fighter changes? And has a meaning? Yes and yes. :)
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SUDDEN・DESU @sudden-desu.net · 15/09/2026
An AI agent doing research hit TCRFs site (probably) and got my IP blocked. Fine, whatever, but the block page goes on about how I'm a bad person and I'm not welcome. So I'd rather not be associated with the site at all, and surely TCRF doesn't want to host research from someone who used AI, right?
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SUDDEN・DESU @sudden-desu.net · 15/09/2026
Absolutely no room for nuance, huh? This has nothing to do with gen AI (which I am strongly against) but I doubt you have any interest in actually having a discussion.
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SUDDEN・DESU @sudden-desu.net · 15/09/2026
I've scrubbed all my past contributions to TCRF from their site. I ask that any finds I post or have posted here or on the blog *not* be re-posted to the TCRF wiki. Thank you.
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SUDDEN・DESU @sudden-desu.net · 15/09/2026
Seems like its compatible with PC. That was an insta-purchase. www.youtube.com/watch?v=NgUQ...
youtube.com
HORI Arcade Classic Pro for Nintendo Switch™ 2 製品紹介PV
YouTube video by HORI 公式チャンネル
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SUDDEN・DESU @sudden-desu.net · 11/09/2026
I wasn't sure which article I wanted to finish and post next, but oh man... I think I've decided. It's gonna be another landmark Sega game. Maybe you've heard of it... :)
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