About
METTLE Core is a compact set of powerful and adaptable rules to help you run or make your own Role-Playing Game (RPG). This core set is geared towards heroic tales of courage, mystery, and intrigue. Detective stories, crime dramas, B-movie mayhem, daring rescues, tense exploration, gritty post-apocalyptic survival, wild-west gunfights, Nazi-clobbering, low fantasy, and grounded science fiction. T…
