Very good concept, well implemented. Enjoyed the short game play, but wish there was more to it, maybe things to collect in order to return  your kingdom to one piece? 

As-is, feels more like a puzzle/toy than a game; not a bad thing but it feels like it was aiming to be larger? It feels like there was meant to be a story/conclusion that got cut short.

I like that once a piece of land is surrounded you don't have to worry about it falling, gives a reason to want to build more circularly. 

It would be nice to have a slightly wider range of vision, and perhaps have it scale or zoom with how large your landmass is-- it was often difficult to tell what I was aiming toward (especially upward) because the landmass took up that segment of the screen. 

It would be nice if the windmills/villages did something (or, if they do, that their purpose was made evident?).