Narnia series in response to reader letters. In 2019, Francis Spufford wrote The Stone Table, an unofficial Narnia continuation novel. Influences on popular culture As with any popular long-lived work, contemporary culture abounds with references to the lion Aslan, travelling via wardrobe and direct mentions of The Chronicles. Examples include: Charlotte Staples Lewis, a character first seen early in the fourth season of the TV series Lost, is named in reference to C. S. Lewis. Lost producer Damon Lindelof said that this was a clue to the direction the show would take during the season. The book Ultimate Lost and Philosophy, edited by William Irwin and Sharon Kaye, contains a comprehensive essay on Lost plot motifs based on The Chronicles. The second SNL Digital Short by Andy Samberg and Chris Parnell features a humorous nerdcore hip hop song titled Chronicles of Narnia (Lazy Sunday), which focuses on the performers' plan to see The Chronicles of Narnia: The Lion, the Witch and the Wardrobe at a cinema. It was described by Slate magazine as one of the most culturally significant Saturday Night Live skits in many years, and an important commentary on the state of rap. Swedish Christian power metal band Narnia, whose songs are mainly about the Chronicles of Narnia or the Bible, feature Aslan on all their album covers. The song "Further Up, Further In" from the album Room to Roam by Scottish-Irish folk-rock band The Waterboys is heavily influenced by The Chronicles of Narnia. The title is taken from a passage in The Last Battle, and one verse of the song describes sailing to the end of the world to meet a king, similar to the ending of Voyage of the Dawn Treader. C. S. Lewis is explicitly acknowledged as an influence in the liner notes of the 1990 compact disc. During interviews, the primary creator of the Japanese anime and gaming series Digimon has said that he was inspired and influenced by The Chronicles of Narnia. Christian themes Lewis had authored a number of works on Christian apologetics and other literature with Christian-based themes before writing the Narnia books. The character Aslan is widely accepted by literary academia as being based on Jesus Christ. Lewis did not initially plan to incorporate Christian theological concepts into his Narnia stories. Lewis maintained that the Narnia books were not allegorical, preferring to term their Christian aspects a "supposition". The Chronicles