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Dev tools · February 21, 2026

Cellarium: A Playground for Cellular Automata

Hey HN, just wanted to share a fun, vibe-coded Friday night experiment: a little playground for writing cellular automata in a subset of Rust, which is then compiled into WGSL. Since it lets you dynamically change parameters while the simulation is running via a TUI, it's easy to discover weird behaviors without remembering how you got there. If you press "s", it will save the complete history to a JSON file (a timeline of the parameters that were changed at given ticks), so you can replay it and regenerate the discovery. You can pan/zoom, and while the main simulation window is in…

Cellarium: A Playground for Cellular Automata launched on February 21, 2026 with 41 votes, #606 of 16,628 launches that month and more than 95% of that year's launches.

Visit github.com ↗Alternativestop 4% of February 2026

In plain words

Cellarium is a playground for creating and experimenting with cellular automata using a Rust subset compiled to WGSL. Users can write automata code, adjust parameters in real-time via a text interface, and observe behavior changes instantly. The tool captures complete simulation histories to JSON, allowing users to replay discoveries and explore how parameter changes affect patterns. It includes pan and zoom capabilities for detailed observation.

written from the facts on this page · September 2026

From the sources

A playground for cellular automata. Contribute to andrewosh/cellarium development by creating an account on GitHub.

In the maker’s words, at launch

Hey HN, just wanted to share a fun, vibe-coded Friday night experiment: a little playground for writing cellular automata in a subset of Rust, which is then compiled into WGSL. Since it lets you dynamically change parameters while the simulation is running via a TUI, it's easy to discover weird behaviors without…

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