Powered by the Grit System, Ultradelve is a unique near-future dungeoncrawler TTRPG in the genre of zone sci-fi: alien Structures black out our skylines, blocking out the sun with their turbocrete façades. You’re a Delver, displaced and struggling. All you need to do is go into the weirdness inside a Structure and steal everything that isn’t nailed down… It’s a simple job, but no one ever said it was easy. In this 68-page book, you will find: complete rules, 4 unique classes, 5 fully fleshed-out alien Biomes, a wide selection of innovative Hazards, complete rules to create Structures with minimal prep, a host of alien tech to loot, fully stated alien encounters, plus a full Structure to run for your group. This is it, Delver—your shot at a better life. You just gotta survive it.