New entry for RC 2026/10:
Tim Clifford Caffrey
Platform: Apple Mac and Mac OS 26+
Project : Contributing to the ASFireWire Project, reconstructing OS support, communication with FW peripherals, for continued use of 90s/00s devices (Sony Handycam) for video production and screen
New entry for RC 2026/10:
ffxx68
Platform: Sharp PC
Project : A hardware module emulating the Sharp CE-140F disk drive, using an SD-Card and an STM32 Nucleo microcontroller
New entry for RC 2026/10:
Wells Workshop: @wellsworkshop
Platform: Macintosh
Project : I’m building a small board that plugs into an Apple ImageWriter II and turns it into an AirPrint and AppleTalk printer.
New entry for RC 2026/10: Mike
Project : The Vacuum Tube Computer. A general purpose 8 bit thermionic tube computer I built using recycled 1950s 6N3P Vacuum Tubes I found in Eastern Europe a few years ago.
New entry for RC 2026/10:
Johannes Wiig
Platform: TeleGuide
Project : Sweden’s videotex. A stock unit back on a telephone network by building the network. One rule: no modifications inside the terminal. Everything connects through what the designers exposed.
New entry for RC 2026/10:
andrei.xyz
Platform: Apple System 6
Project : I will try to daily drive a 1986 Macintosh Plus without it exploding
RetroChallenge retweeted
Should Ai be used to make new Commodore 64 games?
After playing the 100% Ai made game Raider 64 (Tomb Raider on the C64)...4 days and BAM you have a working game. I love any good C64 game, but there are alot of people out there against Ai, so how would you answer. See the gameplay then decide below teapaw.org/MuseumCommodore/status…
Tomb Raider on the Commodore 64?
Four nights. A hundred prompts. A Tomb Raider that actually boots on a Commodore 64 Ultimate.
Dave Izon’s Raider 64 is the kind of thing the C64 scene argues about before it finishes loading. He had the idea years ago — Lara-style rooms, climbing, traps, enemies — then parked it, because the graphics in his head never made it onto the screen. This month he handed the art problem to Astra, the model he says finally produced sprites he was willing to use, plus a custom character set he says was better than anything he would have drawn himself.
He kept going. Gameplay pieces, a Tomb Raider-flavoured tune. Four nights and well over 100 prompts later, the prototype looks like the game he had been failing to finish by hand. He is blunt about what it is not. He says this is not programming a C64 game, and that people who say so are right.
He knows the 6510, the charset limits, and the SID budget. This pass was a test of the toolchain, not a claim that the machine got easier.
The needs a RAM Expansion Unit. The 6510 still only sees 64K; the REU is a DMA bank the CPU cannot address directly, so frames get copied into main RAM.
I played through on my Commodore 64 Ultimate, the download is still an impressive release. Custom charset rooms, platforms, ladders, hazards etc.
It is a prototype / demo that is fully playable and looks amazing. This was my first time playing so just like the OG Tomb Raider I had to nut out the puzzles, and I have to say this is really good. Just 4 days and Dave and his Ai friend produced this. Impressive.
So the question worth answering: if the idea is good and the author cannot draw, compose, or finish coding on their own, is a game that exists because of Ai, better than a game that never exists? Or does the scene only count when a human fought the VIC-II for every frame?
Is this the future of Commodore 64 games?
(For further updates follow Dave's YT Channel and download the playable demo from the links in the comments below).
New entry for RC 2026/10:
jeremy_thorp
Platform: BBC Micro and Acorn Risc PC
Project: My plan is to tell the story, through two ACMS computers I’m restoring, of a small British company called Acorn Computers and how the ARM RISC processor they designed took over the tech world!
New entry for RC 2026/10:
Potatomasher092 and Stossy11
Platform: Macintosh and Windows systems pre-2006
Project: Our project aims to create a smooth and easy to use modern video streaming site that allows machines made before 2006 to play videos hosted on Youtube.com.
New entry for RC 2026/10:
Giacomo Paganelli
Platform: Apple IIe
Project : Finalising my paper called "The Oregon Trail on the Apple II (1985): An Analysis of Source, Data and Algorithms for Replication in Other Languages". Also document its effectiveness through a Python rebuild
RetroChallenge retweeted
I gave Claude another 18 hours.. and I think this one is the best one yet
Macrohard: Windows XP
I'm blown away
We are now on mastadon as @retrochallenge - please follow us. Tag any mastadon blog entries you make with #retrochallenge and we will repost.
New entry for RC 2026/10:
Mars
Platform: 8080/Altair emulation
Project : Emulating 8080s on a modern GPU
New entry for RC 2026/10:
Robert Price: @robertprice@mastodonapp.uk
Platform: RC2014
Project : This year I want to explore using SPI to allow my RC2014 computer to talk to various SPI supporting devices. The Z80 processor doesn't support SPI natively.
RetroChallenge retweeted
Replying to @retrochallenge
@retrochallenge This is the way! Choosing my RC2026/10 goals. urbancamo.github.io/retrostu…
New entry for RC 2026/10:
Scott Finneran
Platform: PDP-8
Project : Modernise the PDP 8 with the hot new technology of RS 232. (Design and build a serial interface for the ACMS Straight 8).
Good luck to everyone who has entered RC2026/10 so far. Remember to send tweet your updates to @retrochallenge so I can repost them!
New entry for RC 2026/10:
Xav101: @Xav101@mastodon.social
Platform: IBM AS/400
Project : A few years ago I picked up an early model AS/400, a 9404-B10. I want image the disks, get it to IPL, and get a ZuluSCSI working in it thanks to some recent support work.
RetroChallenge retweeted
Replying to @retrochallenge
@retrochallenge ASCII art manual from 1939 loriemerson.net/2014/01/26/a…
New entry for RC 2026/10:
ep00ch: @ep00ch
Platform: MC6801/03 SBC
Project : This small 8-bit microcomputer will take full advantage of the MC6803's multiplexed bus, extending it to peripheral ICs and an external bus. No address latches here - just pure multiplexed bus arch!
















