2K Xcom : Enemy Unknown

FROM THE AWARD-WINNING CREATORS OF CIVILIZATION COMES AN ACTION-STRATEGY GAME ABOUT HUMANITY`S LAST STAND.
Threatened by an unknown enemy, the Earth`s governments unite to form an elite paramilitary organization, known as XCOM, to combat this extraterrestrial attack. As the commander of XCOM, you control the global defense team in a battle against a terrifying alien invasion by creating a fully operational base, researching alien technologies, planning combat missions, and controlling soldier movement in battle.