Inside this box you will find two armies of superbly detailed Citadel Miniatures - one force of Humanity's superhuman defenders, the Space Marines, and the another of extra-galactic alien monstrosities, the Tyranids. You will also find Warhammer 40,000: Leviathan, a mighty tome that details the benighted 41st Millennium and the events of the Fourth Tyrannic War, as well as containing all the rules you need to fight exciting tabletop battles with your Citadel miniatures and wage Crusade campaigns in search of glory or prey! Also included if the Chapter Approved Leviathan Mission Deck, letting you generate countless matched play missions to wage war over.