US fantasy novelist George R. R. Martin has signed a five-year deal with HBO

Martin, whose book series 'A Song Of Ice And Fire' became the record-breaking TV phenomenon 'Game Of Thrones', is already working on prequel series 'House Of The Dragon' set 300 years earlier, which is expected to air next year. Photo: AFP

Fantasy writer George R.R. Martin has signed a five-year deal with HBO, the studio said recently, raising hopes among Game Of Thrones fans for countless more adventures set among the dragons and warring families of Westeros.

The 72-year-old, whose book series A Song Of Ice And Fire became the record-breaking TV phenomenon Game Of Thrones, is already working on prequel series House Of The Dragon set 300 years earlier, which is expected to air next year.

Parent company WarnerMedia confirmed a "five year, overall deal" to "develop content for HBO and HBO Max," its streaming service, in a statement.