XCom Enemy Within is a great expansion for Enemy Unknown. It provides tens of new maps to battle the alien threat, many new weapons and grenades, Mech suits and Genetic enhancements along with other cool new features that every fan should enjoy. You must play the game and get into it to discover the new features. IT you have a short attention span then don't bother playing this game. This expansion improves enough to make me want to start a new campaign and eliminate the alien threat. AWESOME!
