It is like a Fitbit to me in that I am incentivized to get out and walk while recruiting troops to take over castles.
I am a graph and numbers guy, so it is not for everyone. I do like that I can play this game just by carrying my phone. I do not have to continue looking at it.
I would like all my friends to play it if it is their thing, but right now I am looking for castle name suggestions. (That is a nice way of saying, try it!)
If you have a name suggestion, I will likely use it on my game and perhaps on my maps for later stories.