No teaching, no narrative. Just toys. Spawn a planet and watch its orbit; drop a hundred thousand balls through pegs and watch a bell curve form; click an object until it shatters. Play with the rules and see what happens next.
Click any 3D object to shatter it into Voronoi fragments that fall under gravity. Press R to reform the pieces.
The Observatory as a 3D operating system — every section becomes a panel floating in a dark room you can drag, push into depth, and fly into. Navigation made spatial.
Click to spawn planets, drag to set velocity, and watch orbital mechanics unfold — resonances, ejections, captures. Share scenarios via URL.
Two simulations side-by-side: 100,000 balls forming a bell curve through a Galton pegboard, and 64 double pendulums diverging from near-identical starts.
Walk an infinite tunnel of physics-simulated cloth panels — scroll to fly forward, move the mouse to ripple the fabric.