When I first heard they were making XCOM into a first person shooter it seemed like a strange idea. The real draw of the original games was the incredibly deep strategic game-play. First person shooters are not know for their deep isometric strategy sections, but, looking at what they showed here I think that this could be very cool. It looks to me as though it might be set up with a home base and separate missions that can be tackled in different orders. Possibly ways to capture the creatures and use them back the base to study and develop new weapons and other such nonsense. This is all my speculation, but, I still think the game I just speculated would be super cool.
Trailer after the jump.