I haven't had the opportunity to play a session of Osmond Ward (or any other TTRPGS) recently, but from looking over the book it seems to have an interesting set of rules the likes of which I'm not sure I've ever seen before! The setting and worldbuilding are also very inventive, and even if you don't use the rules of this game I think the world that's been created is worth checking out for use in other games you run.