 Although the primary characters are Moominmamma and Moomintroll, most of the principal characters of later stories were only introduced in the next book, so "The Moomins and the Great Flood" is frequently considered a forerunner to the main series.The book was not a success, but the next two installments in the Moomin series, "Comet in Moominland" (1946) and "Finn Family Moomintroll" (1948), brought Jansson some fame.The original title of "Finn Family Moomintroll", "Trollkarlens Hatt", translates as "The Magician's Hat".