From publisher blurb: Kessler’s Guide to Dungeons is the ultimate guide to dungeon crawls, demons, devils, madness, and more! Embrace the blessing of the spider goddess to play as a drider, or become a being of pure fiendish power with the playable demons or devils. Beyond just a tiefling, these allow you to sacrifice magic item slots in exchange for powerful diabolic and demonic powers, like devil’s sight, invisibility, shapechanging, the ability to hurl fire or acid, stunning screeches, and plane shifting. Or play as one of the lovable myconids, with a host of different fungal spore powers from spore-based telepathy to hallucinogenic debuffs to paralyzing pacification spores. Confront the horrors of the cosmos or just the horrors of a life of constant violence and danger with the new system for stress and madness, which can be used for the standard Lovecraftian campaign premise, but can also be added into any campaign to give it a more grounded and gritty tone, one in which the psychological toll of adventuring matters as much as the physical. Confront the zealous, all-consuming malice of the devils in their struggle for cosmological domination, or the alien horror of the demons as they spread out to infect and consume everything, with detailed examinations on how these fiends operate, what they want, and how they think and act differently from each other. And of course, no guide to dungeons would be complete without a guide to designing them, and Kessler’s has an extensive guide to dungeon design, focusing on believable design that fits into the world, variety so that longer dungeon crawls remain interesting, and non-linear design that gives the dungeon a real sense of exploration. Plus advice for running evil campaigns that aren’t a train wreck, new dark elf and demonic stats, and more, in Kessler’s Guide to Dungeons!