A Song of Ice and Fire is a series of high fantasy novels by the American author George R. R. Martin. Martin began writing the first volume, A Game of Thrones, in 1991, and published it in 1996. Martin, who originally envisioned the series as a trilogy, has released five out of seven planned volumes. The most recent entry in the series, A Dance with Dragons, was published in 2011. Since then, Martin has been working on the sixth novel, titled The Winds of Winter. A seventh novel, A Dream of Spring, is planned to follow.