XCOM®: Enemy Unknown
From the award-winning creators of Civilization comes an action-strategy game about civilization’s last stand.
Threatened by stranger enemy, the Earth’s governments unite to form a secret paramilitary organization, known as XCOM, to defend this extraterrestrial attack. As the commander of XCOM, you control the global defense team in a battle against a terrifying alien invasion.
Control the destiny of the human race by making and managing a fully operational base, researching alien technologies, planning combat missions, and controlling soldier movement in battle.