From the publisher: Crawl is a setting agnostic game for running crawls (hex, point, dungeon, etc.) using rules built off of the Iron Core mechanic designed by OpalBreeze Games. It is designed to be quick to learn and easy to adapt to the setting of any adventure or setting you may want to run (horror, fantasy, sci-fi, etc.) without any changes or reflavoring of core mechanics. With every roll you will be forced to prioritize Success, Speed, Supplies or your own Physical and Mental Health, balancing your sacrifices in order to press on. Feel free to modify, break, or borrow any parts of Crawl except for the Iron Core mechanic which OpalBreeze Games has their own rules for use of and crediting.