Ravenloft debuted in Advanced Dungeons & Dragons module I6 (1983). The Gothic Horror take on D&D proved so popular that a follow-up module (I10) released in 1986. Ravenloft was then expanded into a “demiplane of dread” campaign setting in the Realm of Terror box set (1990) This post will focus on the Realm of Terror…
Source: REALM OF TERROR (1990): A Guide to Collecting the Original Ravenloft Campaign Setting