Hey, I’ve just released Morphe:

https://matthodges.itch.io/morphe

Morphe is an interactive reaction-diffusion pattern generator: two simulated chemical fields feed, kill, and diffuse across a grid, growing into spots, worms, coral, and maze-like structures entirely from local rules. No two runs look quite the same.

Draw directly onto the simulation to guide the growth, explore presets, or just watch the patterns slowly evolve on their own.

Built in HTML5 (WebGPU).