Publisher's blurb: 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. This focus on so-called “mundane” heroics caters to an underserved style of play and provides a general base to the system. Upcoming games may indulge settings reliant on magic, superpowers, or miracles of science.