Get Ready for Underworld: Sunless Depths for 5E D&D and TOV

 Beneath every world lies another waiting to be explored.

Underworld is Kobold Press's definitive sourcebook for adventures in the lightless depths, packed with everything players and Game Masters need to build unforgettable subterranean campaigns for Tales of the Valiant and 5th Edition. Discover new character options, encounter-building tools, worldbuilding resources, terrifying monsters, ancient civilizations, fungal forests, crystal caverns, and legendary realms hidden far below the surface.

Then put those resources to the test in Underworld: Descent into Darkness, a complete adventure path for levels 1–12. Journey into the deep places of the world, uncover the secrets of forgotten empires, forge uneasy alliances, and gather the strength needed to confront an ancient threat rising from the darkness.

Bring your adventures to life with an incredible lineup of premium Kickstarter exclusives and add-ons, including the Survivor's Kit—a collection of immersive physical handouts, letters, clues, maps, and keepsakes that transform Descent into Darkness into a tactile experience your players can see, touch, and uncover throughout their journey.