Six species of particles interact through a 6x6 force matrix. Each entry controls whether species A is attracted to or repelled by species B. The force function has a characteristic shape: strong repulsion at close range prevents overlap, then attraction or repulsion at medium range, which is the tunable part that creates all the interesting dynamics.
Each randomization reshuffles all 36 entries, producing wildly different behavior from the same code. Some configurations yield stable clusters that resemble biological cells. Others create predator-prey cycles where one species chases another across the torus while a third trails behind scavenging the debris.
The toroidal plane means particles that exit one edge reappear on the opposite side, so there are no boundary effects. No intelligence, no goals. Just particles following simple pairwise force rules with no awareness of anything beyond their local neighborhood.
Randomize to discover new chemistries. When you find a configuration that produces interesting structure, watch how it evolves. Some are stable equilibria; others are transient patterns that eventually collapse or reorganize.
Ventrella, Clusters · Wikipedia