Show HN: Fable52.games – Play and inspect Fable 5.2 single-file HTML games

felixne

Hi HN, Over the past few days, my feed has been flooded with impressive 3D and 2D games built autonomously by Claude Fable 5.2 from a single prompt—like Felix Rieseberg’s 8-hour build "Saltline" (a 1.4MB 3D container-port FPS) and Kevin Ngo’s "What the Water Keeps". What fascinated me structurally about these builds is the constraint: everything ships inside a single, self-contained .html file with zero external assets. The 3D geometry is generated procedurally via WebGL/Three.js, textures are drawn onto offscreen 2D canvases at runtime, and rain/gunfire audio is synthesized live using the Web Audio API. However, actually trying to play and study them was frustrating: 1. Raw GitHub links require downloading the .html locally or routing through third-party previewers. 2. Shared Artifact links often hit rate limits, require logins, or stall on heavy WebGL initialization. 3. Reading a 1.4MB single-file source alongside the original prompt and running game wasn't straightforward. So I built https://fable52.games as a fast, zero-setup browser arcade and source inspector for these single-file builds. How it works under the hood: - Strict Sandboxing: Running untrusted community-submitted HTML/JS in a browser is an obvious XSS hazard. Every game is served from an isolated endpoint with strict headers (`Content-Security-Policy: sandbox allow-scripts allow-pointer-lock;`) inside a sandboxed iframe without `allow-same-origin`. Game scripts can lock the mouse for 3D FPS controls and compile WebGL shaders, but have zero access to the parent site's DOM, cookies, or storage. - Side-by-Side Inspection: For each build, you can toggle directly between the live WebGL canvas, the exact one-shot/recreation prompt used to generate it, and the raw single-file HTML source (or download the .html to tinker locally). - Stack: Built on Cloudflare Workers (Next.js / OpenNext), D1 (SQLite) for metadata and build stats (autonomous build time, file size, token/cost estimates), and R2 for serving the raw .html files with zero egress fees. A quick note if you're on mobile: most of the 3D FPS builds (like Saltline and SUBLEVEL 07) rely on the Pointer Lock API and `WASD` + Mouse controls, so they are best experienced on a desktop browser. It's completely free, requires no login, and has an open submission page if you've been experimenting with single-file HTML games yourself (under 10MB) and want an instant sandbox link to share. I’d love to hear your thoughts—both on the site itself and on where you think this "procedural single-file HTML" pattern is headed!

chaozznl

> This server couldn't prove that it's fable52.games; its security certificate is not trusted by your computer's operating system. This may be caused by a misconfiguration or an attacker intercepting your connection.

varispeed

What is the point of this?

thatmf

as someone who makes (made?) games in the browser for a lot of their career this is both amazing and horrifying.

cr125rider

This is incredible. It seems like the full screen button and mobile support is a bit lacking. Can you fix that?

eraclide

> Worker exceeded resource limits that was fast :)

DavidD

I made a game with Fable5.2 yesterday turned out pretty good - https://civilwarstrategy.com/

thatxliner

HN hug of death

Ikersl

the racing game is fun, just i dont understand the chinese. But the concept about having games on html is pretty fun

pattt

Most of the prompts are just like "make me an underwater game", "Fable 5.2, you're 1 day old, please make me a game and surprise me"

elar_verole

So the OP isn't even real ? Or is he too lazy to actually answer himself people giving feedback about his thing ?

QuantumNomad_

In the Saltline game https://fable52.games/play/saltline-fable-5-2-fps when i play on mobile, dragging the joystick to move around does nothing. The other touch controls work, like the aim, reload, fire and touch-dragging on the right side to look around.

root_axis

Unpopular opinion, but I do not find low effort gameslop at all appealing. Why would I want to invest my time to play something that was thoughtlessly shat out by an LLM after a few lines of text. Even if that were appealing, why wouldn't I just produce my own low effort gameslop, at least then I know it would actually correlate with my own tastes and preferences.

joshuat

> The author hasn't shared the prompt for this game yet. This feels like it defeats the purpose of the site.

eamag

It's also very good in porting boardgames! https://harmonies.eamag.me/

lavendermon

Just tried to load a couple games and received error 1027 - rate limited - you need to upgrade your Cloudflare plan.

Powdering7082

The site is down, but I saw some of them before it started getting rate limited. It's an Opus 5.5 game and not one shot, but I have really enjoyed porting Cataclysm Bright Nights to 3D & real time: https://cata3d.com/

kodoman

The BLAMELESS game was actually very fun and look at the prompt, their was very little in prompt. Fable just made a game that was fun well fairly well designed and humorous. Granted derivative but much better then I expected I must say.

freecodeio

man it would be really amazing if someone used web archive and re-created some miniclip games

jimmis

Speaking as someone who makes games, these demos (like most ai-game demos) show two things: 1. Frontier models are getting very good at building highly complex games, and in relatively short order. 2. Due to a lack creative direction, almost none of these games are remotely fun, and you can usually feel it within seconds of starting to interact with them. This is not to say "ai game = bad". I used ai heavily on a game I released to Steam, and I'm quite proud of it! Just to say that being able to dump out a game in 2 hours is technically impressive, but a "good" game is so much more than just "a program that does what you intend it to do". Most of what makes a game fun still takes a lot of time, testing, iteration, and taste. You can see this on Steam. A lot of "slop" games that jump on trends, and often have poor ratings even if they manage to get a lot of reviews. But I can't imagine it will stay that way. Curation just needs to adapt to times. That said, I'm very excited to see where gaming will go over the next few years! So many more people who may have great ideas for games, and really understand what makes them fun, now have the capability to make them a reality. Maybe we'll _finally_ get some good VR games (pls)?