This article is about the ''Call of Cthulhu'' supplement. For other uses of ''Mansions of Madness'', please see [[Mansions of Madness|Mansions …n of Madness (Scenario)]]; the second edition adds one further scenario, [[The Old Damned House]]

…laying games or rules, but at least part of the content must assume one of these two systems. …products released via the Miskatonic Repository) there are other places on the Wiki: see below for some options.