A strange title for an article, you may be thinking. However for any of the uninitiated Enemy Within is the expansion pack to 2012s phenomenal XCOM: Enemy Unknown, a game that itself was a remake of 1994s original 2D troop-manager. The beauty of Enemy Withins mishmash of isometric class-based squad management and puzzle elements becomes ever more complex as the game goes on, forever pulling you further and further into its pendulum-swing of alien invasion and human resistance. Enemy Unknown reminded all of us what we loved so much about turn-based strategy games, and whilst that genre in itself is not the most easily-recommendable, XCOM provides a fun sci-fi backdrop of countries uniting to provide incredible technology with which to repel the advancing hordes, grounded in a realistic a-few-bullets-and-youre-dead-forever gameplay system that if you give it a chance, will suck away entire days of your life. Although the game might not get the big-budget, celebrity-starred promotional campaigns of the likes of Call of Duty, nor is it thrust down your throats in an annual manner like Assassins Creed. Whats on offer in this years XCOM, albeit an expansion pack of last year's instalment, are additions that completely refine the entire game (for half the price of the big budget titles I just mentioned), and will separate the gamers from the boys.