Emergence · complexity
🧫 Particle Life
A few simple attraction rules between colors give birth to cells, worms and swirling ecosystems — no biology, just physics.
The grid (top-left) is the rule book: each row is a species, each column the species acting on it — a green cell means “attracted”, red means “repelled” (brighter = stronger). Because the grid isn’t symmetric, one colour can chase another that flees it. ★ Click a cell in the grid to set the rule yourself (repel → 0 → attract). “New rules” 🎲 randomizes the whole grid (particles stay put); “Reseed” 🔄 keeps the rules but scatters the particles; “How to read” ❓ opens the guide. Drag (outside the grid) to swirl particles around your cursor.