Keys: Left / Right move, Up or X rotate, Z rotate back, C hold, Space hard drop, Down soft drop, Enter pause.
Touch: drag sideways to move, tap to rotate, flick down to drop.
Drop discs through the pegs and hit the centre jackpot within 20 drops.
Burn, rotate and touch down softly on the landing pad.
Bounce from platform to platform and climb as high as you can.
Classic snake on canvas. Arrows, WASD or swipe.
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.
An explicit leapfrog finite-difference solver. Resonance, standing waves and superposition, with the measured period next to the theory.
