The mythology of the Scandinavian peoples, preserved in such ancient Icelandic texts as the Poetic Edda, the Prose Edda, and other lays and sagas, was little known outside Scandinavia until the 19th century. With the widespread publication of Norse myths and legends at this time, references to the Norse gods and heroes spread into European literary culture, especially in Scandinavia, Germany, and England. In the later 20th century, references to Norse mythology became common in science fiction and fantasy literature, role-playing games, and eventually other cultural products such as Japanese animation.