Using his prompt, I asked Claude Opus 5 to recreate Fallout in a single HTML file. It gave me a fully explorable world with unique landmarks, a functional Pip-Boy, characters with dialogue trees, and it’s now working on adding a vault! And the entire file is only 2.3 MB.

Check out the latest version here:

The 2.3 MB part is what surprised me most. That's a lot of functionality packed into a single HTML file. How maintainable is the code once you start expanding the world?

That's awesome mate! I really need to put some time aside to create my own games.

Is the code available for this like Shumer had?

So.... massive IP theft?

@ArRENCEAI

opus 5 dropped four days ago and already crushes coding benches for half price

How much did this cost you?

@kwwcb I built it with the Claude Max 20x plan. I'm not sure the exact token use as I've been doing some updates to it since. But it was built without any extra paid credits other than the cost of my regular subscription.

That's awesome! Wonder what you can manage with a meager $20 subscription.

Single file, you people are crazy.

What’s the plot about?

This is where coding models get really interesting. You can go from an idea to something playable without building every system by hand.

textures & sounds are part of 2.5mb? cool nonetheless

Everything!

whats ur prompt

did you posted somewhere to try it out?

I didn’t! I’m working on a new version now I’m hoping to be much better. I’ll probably share that one. If I don’t end up liking it, I’ll post this one eventually.

Ok i'm going to try building Wolfenstein....

Wtf this is crazy! Thanks for sharing

You can play it for yourself, it's one HTML file. It's 3.1MB now because ended up running a prompt to keep building before uploading. I might have the original 2.3MB somewhere to I have to look. You can download it here:

2.3mb for a whole explorable world with dialogue trees is the kind of number that should break something and doesn't

亲测有效

amazing. i'm gonna do this i love fallout

Whaou

stick it on a bucket and send us the url

amazing, think about improving it and building on it, think about some quests, it will become a famous trend if you continue it

Yes, you can copy/paste concepts. Develop something original.

Opus 5 is really the best at this moment

2.3MB for all that? Tighter packing than most slicer profiles. Let me see how it's built.

2.3 MB para un Fallout funcional con Pip-Boy y arboles de dialogo? Eso es una locura. Me pregunto cuanto tarda en crashear cuando intentas explorar demasiado rapido.