Introduction To Adventure! The Inner Sea Is The Heart Of The Pathfinder Campaign Setting. From Devil-Worshiping Cheliax To Cosmopolitan Absalom, The Savage And Frozen Lands Of The Linnorm Kings To The Steaming Jungles Of The Mwangi Expanse, There`S A Place For Any Character Or Adventure Your Imagination Can Come Up With. Yet While A Game Master Or Player Might Know All The Secrets Of The Setting, Courtesy Of The Pathfinder Campaign Setting World Guide: The Inner Sea, What Does A Character Know About His Or Her World? With The Inner Sea Primer, Game Masters Can Quickly And Easily Introduce Their Players To The Pathfinder Campaign Setting, And Experienced Players Can Customize Their Characters With New, Setting-Specific Tricks And Traits.