Your isometric screenshots like this one [1] give me the idea of a 3D Lemmings-like game. Throngs of little critters walking stupidly through the environment, turning at right angles, sometimes building little cubical stairs, sometimes blowing themselves up to create spherical holes in everything. I wonder if that's the right gameplay idea for voxels.

[1] http://www.voxelquest.com/uploads/9/5/4/0/9540564/5660133_or...