I've been playing this game since the early beta. It really feels like the classic old-school real-time strategy. You have to get used to play RTS on mobile, but once you do, it feels smooth and nice. Graphics is so cool that you can hardly believe that your $300 phone can make it.
There are many different units and mechanics so you can invent many different strategies. Some of them require a lot of micro and some not so much. Speaking of which, you can control every unit which you don't have too often in the mobile games. Here, however, there are no casuality. You can go as hardcore as you can handle.
There is no monetization yet in the game so it's yet to talk about it. The game is about to be free to play.