A free simulation — play it in your browser, no install. An interactive flocking simulation: tune the rules that steer hundreds of boids and watch a flock emerge.
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Controls: Preset — load a named parameter set. Each one shows a different regime
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Open the live demo Source on GitHubAn interactive flocking simulation in the browser, built with plain HTML and vanilla JavaScript — no build step, no dependencies.
Hundreds of boids follow three local rules — keep apart, line up, stay together — and a flock emerges. Tune the rules live and watch it tighten into a school, scatter into a swarm, or ripple away from your cursor.
Then open the printed URL in a browser.
Murmuration (balanced), Fish school (strong alignment, one turning body), Swarm (cohesion without alignment, a buzzing cloud), Scatter (separation only) and Lanes (alignment only, parallel traffic streams).
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