A fifth “Game of Thrones” prequel series is officially in the works at HBO, Variety has confirmed.
Bryan Cogman, who has worked on “Game of Thrones” since Season 1, has been chosen to write a potential fifth prequel project for the network. It was previously known that four prequels were in development, though George R.R. Martin said that a fifth was also in the works.
Cogman has worked on the show as a writer and co-executive producer. Among the episodes Cogman has written for the series are 'Stormborn', from season 7, and 'The Broken Man', from season 6 which introduced the character of Lyanna Mormont.
Details for the five projects have been kept under wraps for now, with Martin announcing each show will be a 'prequel' rather than a 'spinoff'.