By Jamie Lovett - April 15, 2023 11:26 am EDT. 0. Game of Thrones author George R.R. Martin says HBO is still working on more spinoffs. On Wednesday, during Warner Bros. Discovery's Max "Game of Thrones" creator George R.R Martin shares details about a new Jon Snow spinoff series that he's working on with Kit Harrington. According to George R. R. Martin, the spin-off was star Kit Robert’s Rebellion. The most popular choice for a spinoff goes to the story that precedes Game of Thrones. Robert’s Rebellion is the most recent part of history that’s reminiscent of the A spin-off series set after the events of Game of Thrones is in development at HBO. The series is set to focus on Jon Snow following the events of the central series and currently has a working HBO executives and the Thrones showrunners aren’t thinking about spin-offs or prequels at this time, but it’s impossible to imagine the topic won’t ever gain some serious consideration given HBO is milking the Game of Thrones franchise in any and every way possible. Following the chart-topping success of House of the Dragon, the ongoing Game of Thrones prequel TV series, HBO is reportedly readying another new Game of Thrones spin-off, centring around Aegon I Targaryen’s conquest of Westeros. Although the Westeros fantasy universe There are currently five known "Game of Thrones" spin-offs at some stage of development at HBO, all prequels to the original series. One of these prequel series is "10,000 Ships." George R. R. Martin Offers Updates on 'The Winds of Winter' and 'Game of Thrones' Spin-off Series. George R.R. Martin is an incredibly talented writer who has, for the most part, been very upfront George R.R. Martin has defended "Game of Thrones" from claims of sexism. The new prequel series "House of the Dragon" stars the likes of Emma D'Arcy (top left), Olivia Cooke (top right), Sonoya The series begins 172 years before the events of Game of Thrones during the reign of King Viserys I Targaryen, ultimately leading to the Targaryen civil war known as the Dance of the Dragons. The project is a reworking of the rejected spin-off concept from Game of Thrones writer Bryan Cogman, on which HBO officially passed. aPR9.