Spawns of the Mindrender is a massive, 600-page D&D 2014 and 2024 5e-compatible dark fantasy adventure and campaign setting for levels 11-15 with extensive player options.

Explore the ruined city of Keld as you witness the effects of feuding gods in this Level 5-12 adventure.

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!