Based on the best-selling book series "A Song of Ice and Fire" by George R.R. Martin, this sprawling HBO drama is set in a world where summers span several decades and winters can last a lifetime. From the scheming south and the savage eastern lands, to the frozen north and ancient Wall that protects the realm from the mysterious darkness beyond, the powerful families of the Seven Kingdoms are locked in a battle for the Iron Throne. This is a story of duplicity and treachery, nobility and honor, conquest and triumph. In the Game of Thrones, you either win or you die. Jon Snow is a fictional character in the A Song of Ice and Fire series of fantasy novels by American author George R. R. Martin, and its television adaptation Game of Thrones, in which he is portrayed by English actor Kit Harington. In the novels, he is a prominent point of view character. He is one of the most popular characters in the series, and The New York Times cites him as one of the author's finest creations.