You play as a world-consuming parasite with nothing but a host and the walking cathedral you call home. Conquer your way across a dark fantasy world, build your base, and breed an army capable of bringing this plane to its knees.
Gameplay-wise, it is a 4X game played from a first-person perspective. Construction and conquest happen on physical tables in the environment with traditional top-down interfaces, but interactions with residents happen face-to-face by hovering up to them and talking.