The full-length trailer of the final season of 'Game of Thrones' was out on Tuesday on the official YouTube channel of HBO. The trailer featured all the major characters of the drama series gearing up for the battle against the spine-chilling White Walker army. The trailer opened with Arya Stark's frightened face in a dark background that is played by actress Maisie Williams. As soon as the trailer moved forward, it showed the glimpse of all the lead characters who survived this far including Jon Snow and Sansa Stark. Season eight has six episodes - each of which could run as long as 90 minutes. GOT Season 8 stars Kit Harington as Jon Snow, Emilia Clarke as Daenerys Targaryen, Peter Dinklage as Tyrion Lannister, Sophie Turner as Sansa Stark, Maisie Williams as Arya Stark, Nikolaj Coster-Waldau as Jaime Lannister, Isaac Hempstead Wright as Bran Stark and Lena Headey as Cersei Lannister. The show will be premiered on HBO on April 14.