No, wise reader, $19.99 is not expensive for an iOS game. Not when it's XCOM: Enemy Unknown we are talking about; the best, richest, most beautiful turn-based strategy game of recent years on any platform and one of the best strategy games ever fullstop. What's more, it's a game that will not only entertain you for dozens of hours, but an excellent port from the world of keyboards and joypads to the highly portable world of touch-screens.
And, yes, this is a radical re-imagining of 1993 TBS classic UFO: Enemy Unknown, that has been brought kicking and screaming into the 21st century, complete with elegant mechanics, stunning graphics and a lovely interface. Oh, and do keep in mind that though changes have been made, they are generally for the best and the tactical bits are the best they 've ever been.