Pick a column and drop. Land the disc in the centre jackpot slot within 20 drops to win.

Descending waves, destructible shields and a rising score.

Swipe through flying fruit, chain combos and dodge the bombs.

Endless three-lane runner: switch lanes, jump crates and slide under beams.

Thirty seconds of whack-a-mole. Fast hits build a combo multiplier.

A JEPA learns to predict a ball's next position from a latent representation of a frame - never from pixels. It trains in your browser.

Real Newtonian gravity at the real G. Start circular, nudge the planet, and watch the ellipse appear - with live semi-major axis, eccentricity and period.

Nine coupled pendulums on a real g = 9.81. Small-angle period printed underneath; the chaos beside it is the point.

A real Gray-Scott solver. Eight regimes - mitosis, coral, worms, solitons, fingerprint - and the feed/kill map that makes them.