The Dark Rites of Arkham could exist in the same world as Dreams in the Witch House, going by the visual style and gameplay. However, the one thing that crashes the illusion is that the story of Walter Gilman and the Witch is in The Dark Rites of Arkham. Don’t worry, this is not a best-of-Lovecraft kind of tale, even if most games that tackle the cosmic horrors of H. P. Lovecraft, end up becoming just that. There are many clear references, though, but the location and setting explain that to a degree—shielding itself from most of the been-there-done-that type of feeling.