So it's like Sim City, but you have to make every building brick-by-pain-staking-brick.
And RPS have flagged this as the next big thing?
They be smoke'n the funny stuff.
I'm sure it'll do well, but it's a fairly niche game I reckon - Minecraft has more of a direction connection and you can actually move around/inside of the things you build and it feels more like you've built stuff yourself. With that game you're kinda limited because the camera is always on the outside unless they start adding in complicated camera UIs to control internal/external viewing and stuff, but that'll just make everything feel even more detached.
Still, props for Unity engine