To me, Enemy Unknown/Within is a game where you throw hastily-constructed simulacrums of your friends (and random celebrities) into the meat grinder that is a virtual alien invasion. Of course, it's also a sharp, enthralling tactical strategy shooter, but the personality of it lies in the personal narratives that we attach to the game. The game's actual story is pretty barebones, though it is not without some neat scripted events. Regardless, it's that narrative/gameplay balance that makes this game.