Kisarta is a new rpg Setting Rulebook for the 5th Edition (OGL).
A world of danger and horror, where you will face chaos, insanity and damnation as well as deadly enemies and frightening monsters. The netherworld realms of Kisarta are ruled by unholy and terrifying beings, and inhabited by the souls of the dead that awaken there. It is a place of struggle, and every adventurer must face constant danger and harsh challenges.
link > https://www.kickstarter.com/projects/isolaillyonedizioni/kisarta-a-5e-rpg-setting-of-damned-souls-and-dark-horrors