> fun.byter.lt
← byter.lt
friday afternoon time-wasters

things to stare at instead of working

Ten toys, built from scratch — cellular automata, flocking, gravity, fractals, particle life, fluid dynamics, harmonograph curves, flow fields, reaction-diffusion, and L-systems. Nothing to install, nothing saved, just click and mess around.

simulations

Game of Life

Conway's cellular automaton. Draw a pattern, hit play, watch it live or die.

click to drawopen→

Boids

Flocking simulation — hundreds of agents following three simple rules, moving like a flock of birds.

move mouseopen→

Gravity

N-body gravity sandbox. Drag to launch a mass with a real inverse-square pull on everything else.

click + dragopen→

Fractal

Mandelbrot & Julia set explorer. Scroll to zoom, drag to pan, infinite detail the whole way down.

scroll + dragopen→

Particle Life

Colored particles pull and push each other by type — random rules, cell-like emergent life every time.

randomizeopen→

Fluid

Real-time WebGL fluid dynamics. Drag across the canvas to stir up smoke-like color.

dragopen→

Harmonograph

Virtual pendulum drawing machine — damped oscillators trace looping rose-curve patterns.

randomizeopen→

Flow Field

Thousands of particles drift through a noise field, tracing its hidden structure with their trails.

new seedopen→

Reaction-Diffusion

Gray-Scott chemistry model — coral, spots, stripes and mitosis-like blobs from two numbers.

click to seedopen→

L-System

Procedural plants and fractal curves from a string-rewriting grammar and a turtle.

4 presetsopen→