It’s about the 'how' and not the 'what' as Enemy Within leans on substance to make its case. Featuring the same aliens-are-attacking story as the original, this expansion remixes new missions and enemies into an already-existing framework. A year later, Firaxis returns with a new Civilization-style expansion pack dubbed Enemy Within. Last year's XCOM: Enemy Unknown was a critical darling, redefining how a turn-based strategy game can look and play.
