I had a lot of fun running a few sessions of Ruins of Undermountain in 5e. Went pretty well considering I’ve had a gap of two decades from DMing! Undermountain is such an amazing, expansive experience. A few weeks of dungeon crawling and who knows where to next? And so little of Undermountain could be squeezed into that box!
Underlying guide: creatures (including folk from Waterdeep) LIVE down there for years, so get food from X, leave their wastes in Y, do Z to earn coin [from who?], have planned escape routes and refuges.#Realmslore
— Ed Greenwood (@TheEdVerse) January 2, 2022