XCOM: Enemy Unknown is peerless in modern game design (review)

The X-Com series is unlike anything you’ve ever played before. Like a matryoshka doll, these strategy titles are a game within a game. And then within these, you’ll find layers upon layers of complexity and depth. Sure, some games are like some parts of X-Com, and yet others are like different parts of X-Com. But nothing is quite like the whole shebang.