Hive Fleet Kraken

The lmperium now faces its greatest threat since the Horus Heresy. It comes from another galaxy, drifting across the cold void between stars in pursuit of its ancient need — the horrifying Hive Fleet of the Tyranids. These creatures hunger after fresh genetic material to fuel their race, an ever-driving battle for survival and evolution that even now is slowly grinding through the Eastern Fringe of the lmperium, attacking, assimilating and stripping whole worlds in an everlasting conquest.

The Tyranids need this genetic material to evolve their technology. They do not use standard machines and equipment, instead every tool, every weapon and every member of their race is genetically engineered to perform a specific task, whether this is the awesome Tyranid Warriors or bacteria bred to cleanse the insides of a Hive Ship's internal organs. For unknown millennia the Tyranids have consumed everything in their path until their whole race has emerged as the ultimate predator, a being that devours worlds, star systems and possibly whole galaxies. The threat of the Tyranids is so alien, so utterly apocalyptic that nobody is safe, whether they are human, Ork, Eldar or any other race. The Tyranids make no distinctions, they have no loyalties, they unthinkingly destroy and absorb anything that they come across and while they endure every race in the galaxy must battle to prevent its own extinction.