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Since GPT o3, I've been trying to convert Knuth's TeX engine from Pascal to TypeScript. With 2x limits in the Codex app, GPT 5.3 Codex (xhigh reasoning) finally did it.
Alf Eaton retweeted
Introducing tiny.london
A massive isometric pixel map of London, based on amazing NYC demo by @_coenen from 9 months ago
My agent created the dataset, finetuned qwen image LoRA adapter, did a multiday inference run and built an efficient tile viewer!
I wanted to share something I built over the last few weeks: isometric.nyc is a massive isometric pixel art map of NYC, built with nano banana and coding agents.
I didn't write a single line of code.
Alf Eaton retweeted
Copperline 1.0.0 is out, the first stable release of my cycle-driven #Amiga emulator. OCS, ECS and AGA, A1000 to A4000, CDTV and CD32, 23 releases since the source went public in June.
patreon.com/Copperline/posts… 🧵 1/5
Such a shame, I really hoped Deno was going to be the agents’ language of choice but it was always just not quite there.
It had to be done
@lszabadkai #sc64bble
Someone photographed the keycaps of their own Commodore 64 and rebuilt the lettering into a real font.
Free to download, public domain, so it's fine for commercial work too. Even the PETSCII graphic symbols are in there.
szabadkai.github.io/c64-keyb…
SpaceOut 2082
A retro-futuristic anti-gravity racer, inspired by Wipeout and Space Duel
Made by GPT-6.1 Sol and I
spaceout-2082.hubmed.org/
LUMEN
A short film about light
by GPT-6 Astra and I
lumen.hubmed.org/
Alf Eaton retweeted
I gave Claude another 18 hours.. and I think this one is the best one yet
Macrohard: Windows XP
I'm blown away
I asked GPT-6.1 Sol to create a 90's-style demo showing how to render and record HDR & WCG (P3) colours in Chrome, with documentation for other agents to reference.
phosphor-96.eaton-alf.chatgp…
“At launch, ChatGPT plan usage is available to open-source projects, personal projects that run locally, and selected private apps.”
Replying to @petergyang @sama
@petergyang Vignesh from the Sign in with ChatGPT team here! We are working on it! We need to stablise the UX, scale up user ops, improve our abuse and fraud systems etc. But OSS apps can already integrate it - developers.openai.com/cookbo…
github.com/openai/sign-in-wi…
“Sign in with ChatGPT lets users sign in to your app with their ChatGPT account. With their permission, eligible users can also use their ChatGPT plan to power your app's AI features without setting up an API key.”
Alf Eaton retweeted
I started an open source project to reverse-engineer every game, on all platforms – starting with the #c64 Commodore 64.
gamesexplained.com
To add your favourite game or platform, just tell your agent:
clone github.com/gamesexplained/ga… and follow kit/START.md
If you ever wanted to see inside processors while they’re working
somethingbig.ai/computer
I asked Opus 5.5 to build a working computer from scratch.
And holy fuck did it deliver.
277k logic gates in JS, an OS on top, and games on the OS. This isn't a mockup... it's a computer.
Run it: somethingbig.ai/computer
Finally got a decent arcade setup, with a web catalogue covering the "golden age of arcade video games" and MAME running in WASM with a realistic shader.
MAME has been given a decent renderer for vector arcade games (Asteroids, Star Wars, Tempest, etc)!
github.com/mamedev/mame/pull…
Alf Eaton retweeted
Claude made this rendition of the Homeric Hymn 28 to Athena. I requested 7-string phorminx, male voice, reconstructed pronunciation, respecting the hexametr, and few minor decisions. All in <2h as I was getting provisions for the upcoming Nor'easter. I had very low hopes but...
Alf Eaton retweeted
Claude Opus 5.5 drew every frame of this animation in JavaScript.
Everyone in town sends Claude their requests, but one girl sends a question instead: "What do you love?"
Vintage Emulator Studio: MAME-emulated synths, samplers and drum machines as audio plugins (AU/VST)
youtube.com/watch?v=l5n_Lpz3…
github.com/antoniograzioli/V…
autodafe.net/vintage-emulato…




















