HBO premiered a two-minute video which goes behind the scenes of the fantasy drama on Sunday evening (December 2), ahead of the Boardwalk Empire season finale.
Peter Dinklage, Emilia Clarke, Richard Madden and Maisie Williams are among the cast members who share early thoughts on Game of Thrones' third season during the clip, which shows cast and crew at work in a wide variety of locations.
"The game's been upped; there's so much more danger, so much more risk," said Clarke, who also praised production designer Gemma Jackson and her team for their ability to find and create "natural beauty".
David Benioff is also seen saying that he and Dan Weiss "have been most anticipating [season three] from the very beginning".
Game of Thrones' third season premiere will air on March 31, 2013 on HBO. The show is broadcast on Sky Atlantic in the UK.