This it a development on what I have done with voronoi cellular automata in Softimage ICE here: Voronoi Cellular Automaton

Here are two renders of my animated version of the voronoi cellular automata I developed. All the topology is generated with ICE.

This the first one is my final-ish version. It is styled as growing crystals with balls gloating around sometimes following surfaces to give interesting lighting effects.

The second is just an experiment I did which uses ambient occlusion and normals to generate the effect.