The Four Concretures book describes the Concretures as they cure through three hydration phases. Singularly visionary in defining the shape, process, and temperament of each Concreture, Griffin initiates a rich, open world where textual life collapses into real life.

Copublished with the book, the Four Concretures Card Park contains eight cards: four creature, three reader, and one resource. Composed out of a total set of thirty-two according to a rarity algorithm, each pack is a distinct, one-of-one reading scenario. Cards can be played, traded, and collected to create new reading scenarios.