Monte Cook Games: Numenera Player's Guide RPG

NUMENERA Player's Guide RPG by Monte Cook, Softcover

Old Gods of Appalachia Roleplaying Game RPG Player's Guide by Monte Cook Games

A Player's Guide to Ptolus: a d20 sourcebook by Monte Cook

Monte Cook Games: Numenera Player's Guide

Numenera RPG: The Devil's Spine by Monte Cook Games

Arcana Unearthed: A Variant Player's Handbook Monte Cook d20 White Wolf RPG

A Player's Guide To PTOLUS D20 Sword & Sorcery Monte Cook