The author began exploring the occult through the book "A Very Short Introduction to The Devil" and has since engaged with various tabletop role-playing games (TTRPGs) that examine morality and power, such as "Vampire: The Masquerade," "Call of Cthulhu," and "Candela Obscura." The universe of "Warhammer 40k" presents a complex moral landscape where heroism and villainy are blurred, and players are encouraged to embrace darker impulses. The upcoming game "Warhammer 40k: Dark Heresy" focuses on the role of an Inquisitor executing the Emperor's will, emphasizing a binary moral framework. Executive producer Anatoly Shestov explains that the narrative challenges players to define good and evil for themselves. "Dark Heresy" distinguishes itself with an emphasis on detective work, allowing players to gather clues and compile reports while also incorporating combat mechanics similar to its predecessor, "Rogue Trader." The game features a turn-based combat system with a Fallout-esque targeting system and dynamic combat scenarios that encourage strategic thinking. Shestov describes "Dark Heresy" as a culmination of Owlcat's creativity, offering a larger and more intricate experience than "Rogue Trader."