Detailed Lore and Background on the swarm and information pertaining to the named Hive Fleets.
Artwork featuring the many different units in the Tyranid army
All the rules you need to play a Tyranid army, including 41 datasheets, as well as rules for rare organisms, Hive Fleet adaptations, adaptive physiologies, spore seeding, synaptic imperatives, and Hive Mind disciplines
All the rules you need for a Crusade campaign, including new Agendas, Battle Traits, Requisitions, and Crusade Relics