PuckMAX, my Pac-Man for MSX2, is done. Built with #MSXgl.

I've started the book to program it step by step: 39 lessons, from setup to burning the EPROM. Interactive app + videos; source free on GitHub.

Interested? 2 min survey 👇
msx.computer/survey/puckm...

Repost appreciated 🙏 #MSX #RetroDev

New video! We delve deep in how the cheat code inputs are implemented in the Grand Theft Auto trilogy, and extract all the possible cheat codes of San Andreas, including all the alternative inputs.

#gta #gtaiii #vicecity #sanandreas #reverseengineering

New video! Watch me reverse engineer Commander Keen 6 and its savegame file format, so we can create a savegame editor.

www.youtube.com/watch?v=03vk...

#reverseengineering #commanderkeen #keen6 #dosgames

Thanks to everyone for participating in #MaySiXth!
All entries are now collected here:
maysixth.bitsofbas.com

Hope you enjoy looking back at this moment in time.
Let me know if you're missing or want removal.
#MSX

For this year's #MaySiXth celebration, I brought over some of my old #MSX books from the '80s.

Another mystery solved ! Answering /u/YYZ88's question on the Sierra subreddit, asking how to unlock the secret debug content included in the 1991 DOS game The Adventures of Willy Beamish.

#reverseengineering #retrogaming #willybeamish #sierra

HAL Laboratory was founded 46 years ago today! One of my favourite studios:

- Kirby
- Super Smash Bros.
- Pokémon Snap/Ranger
- Puzzle games (Eggerland, Picross 3D, BoxBoy!, Part-Time UFO...)
- RPGs (Mother 2-3, Alcahest, Arcana...)
- Metal Slader Glory
- SimCity 64

And more!

A few days ago @mp83.bsky.social wondered what made the mole appear in the window during the bonus sequence of Doki Doki Penguin Land.

So, I've made a little video investigating this mystery.

#msx #reverseengineering #dokidokipenguinland

Sad to hear Mark Volman has died. Always loved that era when Flo & Eddie were in the Mothers of Invention.

Happy #MaySiXth ! I haven't got my #MSX here at the moment, but these are some of the games I used to play as a kid, all purchased in the '80s.

Only 6 days to go until #MaySiXth, worldwide known as MSX-DAY! Everyone will post the best picture of their current #MSX setup so get cleaning, set-up the lighting, look for the perfect angle and make it a shot to be remembered!

This year there will be a free game too!

Streaming a new game! Let's see what we can find out about how The Goonies works by reverse engineering its secrets.

Live on Twitch now: twitch.tv/zappatic

Asset extraction is coming along nicely. Managed to read the tilesets, spritesets and graphics data straight from the ROM file. Just need to apply the color palette.

In all my years playing this game, I never noticed that the big "Eggerland Mystery" title on the main screen is totally off center!

Streaming some #msx reverse engineering on Twitch. I'll be extracting graphics/assets from the Eggerland Mystery ROM.

www.twitch.tv/zappatic

NEW VID: an investigation into an interesting chunk of memory in Eggerland Mystery (MSX, 1985), where a little byte seems to be marching on.

#msx #eggerland #retrocomputing #reverseengineering #z80

Just released my first YouTube video, where I discover and delve deep into the two algorithms that handle how the level data in Eggerland Mystery is stored in the ROM cartridge.

#msx #eggerland #retrocomputing #reverseengineering #z80

www.youtube.com/watch?v=E59P...

Eggerland Mystery ROM patching is as good as done, can inject all regular and special rounds, as well as bonus stages, update the passwords and the special word. Simple download from the website where all rounds, 5-packs and ROM packs will be stored.

#msx #eggerland #retrogaming #reverseengineering

Sneak preview of the new Eggerland Mystery Online Construction Mode I've been working on. Made with PixiJS.

#msx #eggerland #pixijs

In the last few streams I have been reverse engineering Eggerland Mystery (#msx 1985), and figured out, among other things, how the level data is stored. I've been working on an online construction mode, a custom round database, and a blog post/YouTube vid to explain how it works. All released soon!