Looks like it has both CA and particle-based. Sure it's cool but personally I'm a huge fan of a related type of simulation: 'Reaction Diffusion' both in terms of the less-aliasy (more continuous, and usually band-limited) visual results that it can produce, and also the range of primitive operations is more continuous and I would say wider, or at least meaningful in a different way (Laplacian, curvature, curl, gradient, complex numbers etc rather than discrete operations). There's some fun experiments on my YT from a while ago, here's an example:
