Flying worms with gravity attractors
You can download a file to play with: https://deekey.gumroad.com/
Procedural animation created with geometric nodes and Simulation hack.
Objects are attracted to attractors depending on their speed and attractor parameters.
Attractors can be easily added or removed, the superposition principle works.
It is possible to observe the butterfly effect visually if all particles are set to almost indistinguishable initial parameters.