XCOM: Enemy Unknown

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.

Requirements:

• Core 2 Duo 2 GHz or Athlon 64 X2 4400+
• GeForce 8600 or Radeon HD 2600
• 2 GB RAM
• 20 GB free space