This composition employs voxel cubes iterated at either 32x32x32, 64x64x64 or 128x128x128. The Noise patch is fed different octaves of values, and determines wether the voxel is on/off.
I think it’s a very basic version of what Minecraft uses, so it’ll be fun to try and add some textures to the cubes.
Rendering time is approximately 5 seconds for the 64x version. Setting it to 128x ramps it up to 30 seconds. This is without any kind of optimisation though, but still, gah..