A playable universe of knowledge

Earthquakes, warming, population, wealth, carbon, satellites, winds, and flight paths—watch a whole planet emerge from data.

Why do we have seasons, tides, and eclipses? Follow motion from the Solar System to black holes.

From a ball rolling downhill to training a neural network yourself.

Break a curve into sines, watch one particle interfere with itself, then hear the harmonics of a string.

Matrices reshape space and series turn approximation into an art—build intuition by playing with the formulas.

Why can a 99%-accurate positive result still be reassuring? Retrain your intuition from Bayes to the bell curve.

Tiny differences become different futures—from double pendulums to three bodies, make unpredictability yourself.

Find a field of tiny Suns under a tree, then watch the light web swim on a pool floor.

From the infinite boundary of the Mandelbrot set to the never-repeating trajectories of strange attractors—how simple rules give rise to infinite complexity.

Game of Life, flocking, reaction–diffusion—how local rules give rise to global order.

From spinning vector fields to fluid vortices—how invisible fields shape visible motion.