It’s a strange thing to know that you’re powerless. As the realization dawns, possibilities and options fall away, leaving you with one inevitable conclusion. While wave after wave of my bombers streak across the sky, I have to imagine that my opponent is feeling helpless. When the bombers drop their payload, it will mark my sixth consecutive multiplayer victory using the same tactic. But the more I play, the more I’ve come to realize that Act of Aggression builds itself on these moments. Each player probes his or her foes, poking for weaknesses before they inexorably find one. But even then, the end comes slowly, and the loser has time to reflect on what went wrong.