The series comprises one epic story that is still being written. Intended to be complete in seven volumes, the author has stated it could go on for longer.Some of the books have been adapted into a series of Graphic Novels. Martin has also written A History of the Targaryen Dynasty set 300 years before the series, as well as a prequel series called The Tales of Dunk and Egg. This series is also known as As Crónicas de Gelo e Fogo in Portuguese or "Das Lied von Eis und Feuer" in German, where the majority of the books are split into two parts and receive a separate numbering, while in the italian version, known as Le Cronache del Ghiaccio e del Fuoco the books are split into two or more parts and receive a separate numbering.