I have a theory about why, in recent gaming memory, I've seen the mixture of Victorian era Britain and Lovecraftian mythos combined to great effect.  It's worth pointing out that, though Lovecraft was undoubtedly a White Supremacist who greatly admired British culture (to the detriment of almost all others), he himself was American, wrote works based in America, and was writing in the Interwar period.  Yet very often we see the tentacled horrors and mad gods of Cthulhu and Hastur and all the rest transplanted in time and space (how appropriate) to Victorian England.  Why?