Show HN: Run Conway's Game of Life in CSS

Hacker News Show2026-11-03 22:190 views

Repository: https://github.com/el-ev/wss

This project is heavily inspired by Lyra Rebane's x86CSS (https://lyra.horse/x86css/).

So I built a WebAssembly-to-CSS transpiler and spent some time optimizing its output. This is one of the programs it produced: the program runs Conway's Game of Life, store the grid in memory, then display the grid as well as buffers in the memory visualizer.

The program polls the on-screen keyboard once every few cycles when it needs input, so you may need to hold a key down for a second or more for it to register.

You may notice there's still a piece of JS in the page, which provides a faster and more reliable clock to the CSS runtime. Without JS, a CSS animation drives the runtime at about 1s per cycle. You can try the pure-CSS version at https://bucket.svc.moe/uploads/wss/life_nojs.html . It is slower but at a playable speed.

Comments URL: https://news.ycombinator.com/item?id=50352316

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Source：https://bucket.svc.moe/uploads/wss/life.html

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