Just a quick update, since I got a lot of questions about texturing - any voxel can have its own custom material properties. Here is a very simple example I whipped up, and included a kind of crude grass and dirt texture (dirt is really just a solid color, dithered by voxel towards where the grass grows). In my opinion, this is very crude and was kind of hastily put together - I promise the future versions will look a lot better :). I am also pleased with initial reactions - my visitors have skyrocketed to over a thousand in one day (not a lot, but that is up from 1-10 visitors per day ;) ). I included one shot with a smooth simplex noise (and crappy looking) terrain and another with a sharper (I think better looking) voronoi-based terrain.