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gravity

A free generative art piece — play it in your browser, no install. Falling typography experiment. p5.js + Matter.js physics simulation where letters behave as rigid bodies, with device gyroscope controlling gravity in real time. Part of niceunderground.

by @niceunderground · niceunderground/gravity on GitHubLANG JavaScript★ 1HOSTED ON NICEUNDERGROUND.XYZUPDATED 8 Jul 2026

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From the README

Falling typography experiment. Letters behave as rigid bodies inside a real physics simulation, controlled in real time by the device's gyroscope.

→ Live demo → Video

"Pensieri" (Thoughts) is a single word — PENSIERI — converted into physical bodies. Each letter is extracted as a vector shape from a custom font, turned into a rigid polygon, and dropped into a Matter.js world. Gravity is not fixed: on mobile, tilting the device changes gravity direction in real time via the deviceorientation API, so the letters slide and pile up wherever you tilt.

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Read the full README on GitHub →

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