IN Xenonauts the story develops in a parallel world. The main character lives in 1979, when the United States and the Soviet Union were fighting the Cold War against each other. Earth is faced with an invasion of hostile aliens. America teams up with the USSR to fight aliens.

What you need to do to defeat the alien invaders:

• build and develop a base – hire new military personnel and workers, scientists are needed to develop new weapons;
• participate in turn-based battles – battles take place in separate arenas, with ground-based military equipment helping the infantrymen;
• fight in the air – there are 3 on 3 battles, with the help of military aircraft with missiles it is necessary to destroy the UFO;
• improve the army – soldiers must have reliable equipment, firearms and items for close combat;
• use alien technology – it is possible to explore captured ships and pick up weapons;
• study enemies – biologists find out that aliens have a hierarchy; They are led by a High Praetor with intellect and free will.

In Xenonauts you can take 8 soldiers on a mission. Each fighter has a unique appearance, name, characteristics, 3 scales. In turn-based battles, each Xenonaut must be controlled in turn. Having a sniper rifle, pistol or other firearm in his arsenal, an earthling can attack, study an object, hide, or move to another place in 1 turn.