The game itself has three maps, which may sound bad, but once you start playing you will only want to play dominion mode which is by far the best. Also coordinating plans with your team mates is fun and simple, though you can play without doing so. But wait here is the best part, it is absolutely free. I am not kidding, you don't have to buy anything with real money, all you have to do is play.
I can not say much more that has not been said, but I highly recommend this game to anyone looking for a good time.