这是一段介绍文字 A Song of Ice and Fire is a series of epic fantasy novels by the American novelist and screenwriter George R. R. Martin. He began the first volume of the series, A Game of Thrones, in 1991, and it was published in 1996. Martin, who initially envisioned the series as a trilogy, has published five out of a planned seven volumes. The fifth and most recent volume of the series, A Dance with Dragons, was published in 2011 and took Martin six years to write. He is currently writing the sixth novel, The Winds of Winter. A seventh novel, A Dream of Spring, is planned.