Voxels are discrete, so not absolutely tiny. Voxel = vox (volume) + el (element), similar to pixel = pix (picture) + el. Do you know Minecraft? All those cubes in its world are voxels.<p>The amazing thing here is how tiny this guy&#x27;s voxels are while still keeping the game running at a decent framerate.<p>Compared to traditional polygon graphics: voxels are discrete elements in space (sort of like &quot;giant atoms&quot;) while polygons are the surface of objects (cuts of planes in 3d space). Being merely polygons they have no depth (as GP said, they&#x27;re paper-thin) while voxels are inherently volumes in your space. You could compare it to Lego vs. papercraft.