This (voxel based) tech would be great replacement or alternative for current landscape system. But done statically in editor, so it can get shadows and what not in runtime. Also that stuff needs some way to make it look less minecraftish at close ranges. But as landscape tool this would be really , then add some tools to make procedural erosion etc.
As standalone game tech it can do some rts, flight simulator, anything that shows terrain from some distance, up close, it is just ugly. It is bit too early for detailed voxel games, but in few years (maybe Skyrim 3 or Fallout 5).
And no demo videos do not count, they are just tech demos. For reference see what nvidia does on titanX now, its but we need 2-3 years for games devs to start thinking about that tech seriously, then next 3-4 years for them to develop games. Current games (Fallout 4) look like best tech demos from 2009 or so. Tech needs time to go from limited tech demo to full game, games have ton of other things to calculate besides cool graphics effects.
Anyway this voxel stuff would be for top down rts.