The playground's pure-maths corner. A single line of arithmetic, iterated, makes endless structure — no randomness, no cheating. Determinism that looks like life. Each toy runs entirely on your device.
A slow, endless plunge into the boundary, forever finding new detail. It dives, hits the floor of what the maths resolves, fades on to another place, and keeps falling. Tap to pause, click to steer.
A GPU explorer — drag, zoom, watch the palette breathe. z → z² + c, on your graphics card.
Every point of the Mandelbrot has its own Julia. Drag a little map to pick c and watch the big set morph live.
Watch φ build a sunflower — and watch it collapse into spokes when you nudge the angle off 137.5°.
Why they live here. These are wonder, not product — pure mathematics let out to play. They used to sit in CongoSky's skunkworks; they moved to the rodeo where they belong. The honest toys that back a real proof (compression, encryption, the Merkle tree) stayed home on the platform.