The mechanics are simple to understand if the rules are read. I don't think the music really fit the game, though. My CPU opponent spawned a bunch of large, overpowered balls, and they all got to my size, almost making me lose. This makes me think that there is some "underdog" mechanic for players that are losing to suddenly gain an advantage. If this is the case, please note that it's frustrating to be winning by a lot, only to have your opponent send an impossible wave at you.