sean bean game of thrones 'Game of Thrones': Finally, a full fledged preview of HBO's new seriesHBO had been pretty stingy with sneak peeks of its new series “Game of Thrones” — but that ended on Sunday.

Prior to the season finale of “Boardwalk Empire” Sunday night (Dec. 5), HBO aired a 10-minute making-of/preview special for “Game of Thrones.” It was the usual mix of teaser footage, behind-the-scenes info and talking heads with the cast and crew — but it was also the first extended look fans have gotten at the show.

The video — which features interview segments with author George R.R. Martin, whose novels form the basis of the series, as well as creators David Benioff and D.B. Weiss — is at the end of the post. But we also wanted to share a few new photos HBO has posted of the cast. Up above is Sean Bean (“The Lord of the Rings”) as Eddard “Ned” Stark, and below is Lena Headey (“Terminator: The Sarah Connor Chronicles”) Cersei Lannister:

lena headey game of thrones 'Game of Thrones': Finally, a full fledged preview of HBO's new seriesNikolaj Coster-Waldau (“New Amsterdam”) plays Cersei’s brother Jaime:

nikolaj coster waldau game of thrones 'Game of Thrones': Finally, a full fledged preview of HBO's new seriesPeter Dinklage as the third of the Lannister siblings, Tyrion:

peter dinklage game of thrones 'Game of Thrones': Finally, a full fledged preview of HBO's new seriesEmilia Clarke is Daenerys Targaryen:

emilia clarke game of thrones 'Game of Thrones': Finally, a full fledged preview of HBO's new seriesHere’s the video, in which you’ll also see (among others) Harry Lloyd as Daenerys’ brother Viserys, Mark Addy as Robert Baratheon and, briefly, “The Wire’s” Aiden Gillen as Littlefinger. “Game of Thrones” premieres in April.