Wave J2 · Task 5 · Sandspiel CA · THROWAWAY PROTO — 2026-06-21

Seafloor sand — Sandspiel cellular automaton

CPU-JS falling-sand CA uploaded as a DataTexture each frame. Per-cell random ra value modulates brightness — the exact trick behind Sandspiel's grainy look (source: Making Sandspiel, Max Bittker 2019). Click anywhere in the panel to add sand. Toggle theme (top-right) for light vs dark.