Many, many hours are wasted in my house with that game. All by my 13yo son and 11yo daughter. They think the 8bit graphics is "cool". They also really seem to enjoy the creation of new worlds and sharing amongst friends. I guess that means it's quite the "social game". I have purchased the first cost of the Android application. My son has spent his birthday money on the computer version. It's either that or some toy that will only hold his attention for a couple of hours.
I, as an adult, unfortunately tend to have "more important" things to do
... so I can't speak to it first person.