to blur together. Each chapter follows a near-identical format, making it difficult to differentiate which floor had what trap or if that cave actually contained a giant centipede or interplanar frog people. Each dungeon level features a contextual header to complement its contents, a full-page map, and occasionally something smaller to represent a magical artifact or creepy-crawly. This has a bit of a knock-on effect to the art department. While still present, the usually prominent and evocative illustrations that adorn each Fifth-Edition book thus far feel somewhat sparse". For Bleeding Cool, Gavin Sheehan wrote that "this dungeon, nay, this entire book was designed to be an experiment in how good you are at your skill sheet. No one person can navigate this thing and it requires a decently balanced team. [...] There are weird little sidequests in every level of the dungeon that play a role in the history of these caves and how the Undermountain came to be. This is hardcore D&D lore on steroids, with a pinch of danger where you may or may not be able to escape in the process. [...] If all you ever love to do in D&D is fight monsters and level up with very little storyline going on, then this is for you. But if you're looking for much more substance than finding gold, killing things, and finding out what's up with this wizard in the basement, there are other tomes in 5th Edition that would serve you better. It's not a bad book, it's not a great book, but it is right in the middle". Jason Wilson, for VentureBeat, had previously written about his love of megadungeons such as Undermountain and on this incarnation he wrote that it "is the deep complex beneath the city of Waterdeep, and it's the creation of an insane wizard, Halaster Blackcloak, and this campaign book for Dungeons & Dragons explores these halls better than any production beforehand. It's a fun read even if you don't plan on running a party of adventurers through this deathtrap. But this isn't just about the lore and the fun. It works with an earlier campaign from this year, Waterdeep: Dragon Heist, and when you use both together, it combines for an epic campaign that takes your players from 1st level all the way to 20th level. And it's all in (or under) one city. That's an amazing feat". Kody