The OSR’s Lost Megadungeons: What We Never Got to See

The deepest mysteries in old-school gaming were never meant to stay hidden. From the real Castle Greyhawk to the unfinished levels of Dwimmermount, Blackmoor’s strangest experiments, and the megadungeon projects that vanished into notebooks and half-mapped ideas — these worlds shaped how we play today, even if we never saw them completed.In this episode, we dig into the roots of the megadungeon, why the OSR brought it roaring back, and how “lost” designs continue to influence everything from Stonehell to Barrowmaze to Castle Zagyg’s modern revival.If you love OSR history, B/X-style dungeon crawling, or the stories behind the worlds we never fully explored, this one goes deep.