Gut Microbiome: Spatial Competing-Guilds Map

The gut microbiome doesn't drift smoothly between compositions — it tends to settle into one of a small number of self-reinforcing configurations and resist leaving. This simulator renders that behavior as a live 2D reaction-diffusion field: two competing bacterial guilds spread, diffuse and outcompete each other across a petri-dish grid under real Lotka-Volterra competition kinetics, so the whole colony's fate emerges from thousands of interacting grid cells rather than a single rolling ball. Push the diet slider far enough and one guild's resource ceiling collapses outright; fire an antibiotic pulse and, because a real course doesn't hit every patch of the colony equally, the community can resettle permanently into the other guild's territory — a concrete illustration of why microbiome recovery after antibiotics is so often incomplete.