Overall, very cool, another solid title from David McDonough. Cavern of the Many-Legged is very well written and thought out. I especially like the Keril NPC and the Talash NPC, as well as the intricate political intrigue between the various factions and how they connect with the outside world of the dungeon of the mad mage. Definitely worth a pick-up, especially if you want a supplement to the mad mage.
[5 of 5 Stars!]