Fractals & Automata
Game of Life
Conway's Game of Life with glowing magenta cells aging through three color tiers; field reseeds automatically when population collapses.
canvasmedium complexitymoderate motion
Open on the canvas to copy the code → Free account · 3 copies a day · membership goes unlimited
Worth keeping?
Votes steer what gets built next — sign in to cast one, free to read
When to use it
Ambient backgrounds for tech/generative-art themes, screensavers, or loading screens needing emergent organic motion.
When not to
Contexts requiring legible text overlays or light-background UIs — background is hardcoded dark navy and cell flicker competes with content.
Working with an AI agent
Every component ships agent-ready metadata. An example instruction for this one:
Change palette to green-on-black: set BG=[5,10,5], TIERS=[[80,200,80],[120,255,120],[200,255,200]], and slow step rate to STEP_MS=180. Theme: dark tokens live in :root, the light variant in :root[data-theme="light"]; ?theme=light or a {type:'forever:theme'} postMessage switches at runtime.
Safe to edit
- cell color tiers (TIERS array)
- step rate (STEP_MS=110)
- initial seed density (0.30 in seed())
- reseed threshold (0.018 * grid size)
- reseed injection rate (0.16 per cell)
- grid size cap (COLS/ROWS max 180)
- theme tokens (:root dark defaults + [data-theme=light] overrides)
Keep intact
- IIFE wrapper
- reduced-motion static-frame fallback
- visibilitychange pause/resume
- low-res ImageData stretch pattern (critical for perf)
- theme hook (?theme= bootstrap + forever:theme message listener + theme tokens)
Known limitations
- Age tracking resets on cell death — settled patterns rarely reach tier-2 color
- Background color hardcoded in both CSS and BG array — must update both to retheme
- No pointer interactivity; fully passive
More Fractals & Automata components
- Mandelbrot ZoomEscape-time Mandelbrot set zooms slowly into a filigree boundary seam, rendered in smooth red-to-gold color bands on a near-black background.
- Julia MorphJulia set fractal whose complex constant traces a slow Lissajous loop, morphing green filaments between connected and dendritic forms over ~70 seconds.
- LeniaLenia smooth-life automaton: glowing teal-to-cyan blobs drift and pulse on a dark field via a typed-array convolution sim scaled up with CSS.
- L-System FernA fractal fern draws itself branch by branch via an L-system grammar, coloring segments brown-to-gold by depth; it holds then restarts.
- Domain WarpSlowly flowing domain-warped fractal noise rendered in green, sage, and ink tones; layered fbm warp passes produce marbled smoke patterns.
- SierpinskiSierpinski triangle accretes from 26,000 chaos-game points, glowing red on near-black; recent points flash white-hot before cooling.