by LeeB1985
More info here: https://boardgamegeek.com/thread/2987824/buyers-guide-what-c...But in short all you need is a core box (Cthulhu: Death May Die, Cthulhu: Death May Die – Fear of the Unknown or Cthulhu: Death May Die – Forbidden Reaches) to start, it doesn't matter which one. The link above will give you a clearer picture of the differences between them.