I'm glad to see the SimTunes reference because this was reminiscent of mucking around and creating little spatial soundscapes. Always a pleasure.
As a music toy / generator, I like that this is much more chaotic and atonal. SimTunes follows predictable rules, and this does too, but here you've got dozens of critters interacting with the grid and causing it to slowly decay. Beauty and melody is here but sometimes the best tools are those capable of being broken. I spent much longer on this than I expected I would!