Everyone has heard of The Lord of the Rings trilogy and the Harry Potter series. Thanks to J.R.R. Tolkien, C.S. Lewis, and J.K. Rowling, readers have been enchanted by wizards, dragons, hobbits, elves, and hundreds of magical creatures. Ghostwriting fantasy requires that a ghostwriter create alternate but believable worlds while addressing important thematic elements such as enlightenment and darkness, war and peace, myth and reality. Many of these archetypal themes reflect contemporary beliefs in areas of theology, philosophy, and sociology.
Fantasy novels usually use sophisticated symbolism. The works of J.R.R. Tolkien and C.S. Lewis, for example, are largely Christian allegory and explore the perpetual struggle between good and evil. Mythical creatures and kingdoms are the norm, but upon closer scrutiny, these elements usually hold up the mirror to contemporary society in order to tell us more about our own world--the here and now.
If you've created a world of mythical proportions, I'd love to hear about it.
You may also be interested in Ghostwriting a Series.