Just look at the game "From Dust" and you will see that games using voxels/volumes are present day. In this game you can sculpt your terrain to let water flow, to build a water barrier or to deal with lava.

But I remember very old games like Magic Carpet that already allowed to transform terrains.

The CryEngine editor as well as the C4 engine editor both use voxels during the editing of terrain although they convert these data into mapped polygons for the final game.

Volumes are also the base for static lighting of dynamic objects in Unity or Vision 3d.

And yes, I agree with Spike about the nitpicking of Jibb. I did not talk about the original point of this thread but about the original point I was discussing with Spike. I entered the discussing at that time and ignored the voxel part completely.