The following year, the books of "The Compleat Series" were combined with a new role-playing system into one central rulebook, "The Arcanum", a 156-page softcover book by Sechi and Taylor. This was followed in 1985 by "The Lexicon", a 128-page softcover book by Sechi, Taylor and Ed Mortimer that provided the setting, and "The Bestiary" in 1986, a 132-page softcover book written by Sechi and J. Andrew Keith that provided the creatures. As a result, the role-playing game became known as "The Atlantean Trilogy"; later versions with fewer than three books were simply titled "Atlantis".