The Chronicles of Narnia
C.S. Lewis's seven Chronicles anchor this entry, surrounded by their adaptations: the 1988 BBC television serial, the Walden Media film trilogy of 2005 to 2010, and a tie-in game. It is a fantasy world built on talking beasts, a frozen kingdom, and the lion Aslan, with Christian allegory worn close to the surface.
The distinctive wrinkle is structural. Lewis wrote the books out of in-universe sequence, which means the order you publish them in and the order events actually happen never agree. Readers have argued about it for decades, and the catalog reflects both the original Wardrobe-first entry point and the Magician's-Nephew-first internal timeline.
It crosses books, TV, film, and game, though the novels remain the spine and the films the most-seen door into Narnia.
The The Chronicles of Narnia franchise spans 1 series, 8 books, 1 games, 4 films in the CrossBinge catalog.