Zombicide: Invader is a cooperative game in which 1-6 players face Xenos, an unfathomable swarm of infected Xenos controlled by the game itself. Each player takes on the role of one to six survivors in a sci-fi setting being overwhelmed by these Xenos. The goal is simple: Choose a mission, complete its objectives, kill as many Xenos as possible, and (most importantly) survive!
Most of the time, Xenos are predictable, but there are a lot of them and they use nasty tactics not encountered in previous Zombicide games. Only through cooperation can players achieve the Mission objectives and win.