Teardown. Though I'm more interested in the voxel engine (fully destructible worlds) than the concept of the game itself.
[video=youtube_share;XFPVFkM9MpI]
Couldn't they just display the distant terrain, POI's and trees at a certain height and unload the chunks? Until this height is reached the fly speed could be limited.
It would be nice btw if the chunks would load in a circle around you and not in a square. Not only does it look more natural...