Published in the 50s, The Chronicles of Narnia by C. S. Lewis, set in a magical realm, soon became so popular that it generated a series of versions which were transposed onto different media platforms. Quick reminder: snowball effect is one type of transmedial storytelling, in which a primary text becomes so popular that it generates a series of subsequent texts in different media.
- Television: The first book of the series, The Lion, the Witch and the Wardrobe, was turned into a TV series in 1967, directed by Helen Standage, and later on in 1979, directed by Bill Melendez. A unique element of the 1967 version, all the animals were played by actors dressed into costume, while the other versions used computer generated animals. Between 1988 – 1990, BBC turned the first four books into a TV series.
- Radio: Called Tales of Narnia, the BBC radio version of the series, covered the whole plot in 15 hours.