The production, fun, and utility of Ironsworn & Delve continue to blow me away. Bolt this onto the side of Ironsworn to play some good ol' dungeon delving stories. Despite the "discover through play" format, Delve can still be adapted for use with published modules with a manageable level of creative reinterpretation - marking maps into larger zones, building custom wandering denizens based on the module bestiary, etc. As a GM, its a great way to get a feel for a module before running in in whatever system you will eventually use.