HBO wants to develop several more Game of Thrones spinoff shows. The network currently has two shows in the works. House of the Dragon has been in development for quite some time and is expected to premiere sometime in 2022. That series will follow the early years of the Targaryen dynasty and is set to star Olivia Cooke and Matt Smith. The show is expected to be a big budget affair and feature the titular creatures heavily.
HBO recently announced that another prequel is also in the works, this one set 90 years before the events of A Song of Ice and Fire. The show will be based off of author George RR Martin's Dunk and Egg novellas that follow the adventures of Ser Duncan the Tall and Aegon Targaryen, future king of Westeros. The two spinoffs come after HBO began development on numerous projects. One, The Long Night, made it to the pilot stage before eventually being nixed by the network.
According to EW, the network is interested in developing several more spinoff shows. They want to develop these shows with the intention of greenlighting them. HBO has reportedly met with writers and creators familiar with Martin's world, but no writer is officially attached to any projects. One spinoff they're particularly interested in is one based off of Robert's Rebellion, the events that directly preceded the original HBO series.
While HBO has previously said that direct spinoffs or prequels of the flagship series were off the table, the interest in a series based on Robert's Rebellion indicates a change of heart. In fact, a show like that could provide a unique opportunity for the network. After losing half their viewership post-Game of Thrones, exploring the era directly before the show could draw back in viewers who would otherwise be hesitant about subscribing to HBO again for a show they may not be as familiar with. The Tales of Dunk and Egg takes place in a more familiar era, too, about 90 years prior to the original series.
Besides the two previously mentioned shows, Martin's world has plenty of material perfect for a television show adaptation. Casey Bloys, HBO chief content officer, has said that more spinoffs were possible and it seems like he's making good on his promise. The network has a lot riding on the Game of Thrones brand and the interest in developing more spinoffs is an investment in a brand that they know people are invested in. Now that the heat has died down from the original show's controversial ending, the network can finally move on and begin expanding the franchise in new and exciting ways.
Source: EW