XCOM: Enemy Unknown pays homage to its late 90′s progenitor by embracing strategic turn-based combat. If you’re under the age of 25 and/or have never played anything without a major international landmark being blown up by terrorists, you’ve probably already tuned out. Which makes you a bit of a silly billy, as the trailer below shows off just how awesome repelling an alien invasion is. It’s got a deep-voiced narrator and everything; you could be watching a CoD trailer except there are actual colours. XCOM: Enemy Unknown comes from the strategy nuts at Firaxis and is due on PC, PlayStation 3 and Xbox 360 in October.