From publisher blurb: The Strange and The Strange Bestiary introduce scores of creatures compatible with Numenera, many of which look and seem as if they stepped right out of the Ninth World! Using creatures from The Strange in your Numenera campaign is super-easy--the rules require almost no conversion work. Strange Creatures of the Ninth World gives you advice on interpreting the minor differences in creature listings between the two games, along with alternative, Ninth-World-specific backgrounds for about 80 creatures from The Strange Bestiary.