Through 2025, Nat19 has created quarterly splash books for 5th Edition, featuring new options for players and GMs—now we're funding physical copies in both soft and hardcover formats!

What are you willing to become for eternal life? The Black Market Guide is a 5e/Pathfinder 2e East Asian sourcebook expanding the worldbuilding of Undying Corruption. Subclasses, ancestries, bestiary, and a new world!