The Warhammer 40,000 universe, often referred to as 40K, is a dark, dystopian future set in the 41st millennium, where humanity is under siege from all sides. At the center of this universe is the Human Empire, a galactic empire whose planets intersect the stars. But the empire is constantly in danger.
The minions of alien races such as the Tyranids, a rampaging horde of insect monsters, or the technologically powerful Necrons surrounded by ancient mystical forces known as the Chaos Gods are also a constant threat to the Empire. These internal and external forces conspire to break the Emperor's grip and plunge humanity into eternal darkness.
But not all hope is lost. The Empire has its defenders: Space Marines, genetically enhanced super-soldiers, and the Imperial Guard, brave and determined soldiers who willingly give their lives for their Emperor. In the Warhammer 40,000 universe, there is only war!