Xenonauts 2

Wage a global war of resistance against an alien invasion. Command turn-based tactical battles, build a network of covert bases, directly control your fighter wings, and achieve strategic victory in a simulation of asymmetric warfare against a technologically superior foe.

It is 2009 - the Cold War continues, and the Berlin Wall still stands. In the shadows, a secret organization works beyond arbitrary political boundaries to gather information about a greater threat to humanity. Mysterious sightings of unidentified flying objects and unknown beings have grown more common, coinciding with escalating international tensions and panic. Those who report such sightings frequently disappear without a trace, and it is clear that the aliens grow bolder with each passing day. Time is of the essence.