Alienation is a top-down cooperative shooter that pits squads of soldiers against a full-scale alien invasion of Earth. Players choose from different classes, each with distinct weapons and abilities, and fight through hordes of enemies solo or with friends.

Loot and gear progression encourage repeated missions, rewarding players who mix and match equipment to suit their preferred class. It suits fans of frantic, loot-driven twin-stick shooters built for co-op play.