Game of Thrones is an American fantasy drama television series created for HBO by David Benioff and D. B. Weiss as showrunners and main writers. It is an adaptation of A Song of Ice and Fire, George R. R. Martin's series of fantasy novels, the first of which is titled A Game of Thrones. Filmed in a Belfast studio and on location elsewhere in Northern Ireland, Malta, Scotland, Croatia, Iceland, the United States, Spain and Morocco, it premiered on HBO in the United States on April 17, 2011.