Every ‘Game of Thrones’ Spinoff Coming Next, Confirmed and Still Rumored

The ‘Game of Thrones’ universe has expanded well beyond the original series, and the pipeline behind it shows no sign of slowing down. Between shows already airing, projects greenlit for future seasons, and concepts still stuck in development limbo, Warner Bros. and HBO have built out a sprawling slate tied to George R.R. Martin’s world of Westeros.

Some of these projects are locked into release windows, while others remain speculative, shaped by scattered comments from writers and producers rather than official confirmation. Here is where every known spinoff currently stands.

‘House of the Dragon’ Remains the Flagship Prequel

‘House of the Dragon’ premiered its third season on HBO and HBO Max on June 21, 2026, continuing the Targaryen civil war known as the Dance of the Dragons and picking up directly from the brutal season two finale. The eight-episode season covers events from George R.R. Martin’s book Fire & Blood, with the Dance of the Dragons civil war between Team Black and Team Green exploding into full-scale war. The premiere episode opens with the Battle of the Gullet, which showrunner Ryan Condal has called one of the most ambitious episodes of television ever produced, according to Deadline. The season runs weekly through a finale on August 9, 2026.

HBO has already confirmed that this show will conclude with a fourth run. HBO has officially confirmed that season 3 is the penultimate installment of the spinoff, with season 4 bringing the story’s conclusion. HBO has previously stated that season 4 will arrive in 2028, though no specific month has been given since the release remains far out and plans are subject to change. Ryan Condal has revealed it will indeed be the final season of the show.

‘A Knight of the Seven Kingdoms’ Brought a Different Tone to Westeros

‘A Knight of the Seven Kingdoms’ marked HBO’s second live action prequel following ‘House of the Dragon,’ and it took a noticeably gentler approach to the source material. The show is based on the Tales of Dunk and Egg novellas, leaning into quaint and cozy fantasy with only a few added violent thrills, a very different flavor from what audiences are used to from ‘Game of Thrones.’ The series follows Ser Duncan the Tall, a lowborn hedge knight played by Peter Claffey, and his young squire Egg, who is secretly the future King Aegon V Targaryen, played by Dexter Sol Ansell.

The road to the screen was not smooth. Warner Bros. Discovery executives had previously said the series would air by the end of 2025 before the premiere was pushed to 2026, with HBO content chairman and CEO Casey Bloys narrowing the release window down to winter during WBD’s upfront presentation. The season ultimately premiered on January 18, 2026, and, according to reporting, was a significant success for HBO.

‘Ten Thousand Ships’ and the Long Road for the Nymeria Prequel

Among the earlier development stories in the franchise, ‘Ten Thousand Ships’ has had one of the bumpier paths to production. The Rhoynar prequel would follow Nymeria after her home of Rhoyne was conquered, tracing her journey across the ocean to settle in Dorne, where she married Lord Mors Martell and ruled as Princess. The story is expected to take place roughly a thousand years before the events of ‘A Song of Ice and Fire,’ following the legend of Nymeria and the Rhoynar after their defeat by the Valyrian Freehold in the Second Spice War.

Writer Brian Helgeland was originally attached to the project before HBO passed on his script. Helgeland has said the script came out great but that the network felt the period of his version was too far removed from the pillars of the original show, adding that nothing is ever truly dead in development. Martin later confirmed that playwright Eboni Booth had taken over writing duties on a new pilot, and more recent reporting indicates the project has been revived, though no further production details have been confirmed as of this year.

A separate story tied to an Arya Stark sequel has since emerged from the same corner of HBO’s development slate. An Arya Stark sequel series is now in development from writer producer Quoc Dang Tran as part of his overall deal with HBO, effectively replacing the long rumored Jon Snow spin off starring Kit Harington. Harington has said that project is on the backburner for the moment, though some reporting suggests elements of that concept could still resurface down the line. There is reportedly a chance the Arya story could take place in Essos, though nothing about the plot has been set for definite.

Aegon’s Conquest Signals the Franchise’s Move Into Film

The ‘Game of Thrones’ universe is also branching into feature filmmaking for the first time. Warner Bros. officially announced Game of Thrones, Aegon’s Conquest at CinemaCon in 2026, with the writer role falling to House of Cards creator Beau Willimon after various other creatives had previously been attached to the project. During the studios’ presentation, Warner Bros. confirmed the film, listed under its working title, is officially happening, though it was included in a 2027 and beyond category, meaning the movie is likely still a few years away.

The story draws from the earliest chapter of Martin’s timeline. The name Aegon carries significant weight across multiple eras of the franchise due to the legacy of Aegon the Conqueror, the Targaryen who arrived from Valyria and conquered Westeros on dragonback, and this three hundred year prior conquest story has been a commonly requested arc since spinoffs first became a possibility. The project would reportedly follow Aegon and his sister wives, Visenya and Rhaenys, as they set out to conquer the Seven Kingdoms and begin the Targaryen dynasty, though it has not been officially greenlit, and HBO has reportedly explored telling the story either as a full drama series or a large scale feature. Currently, there is no word on an official release date.

Beyond the confirmed projects, additional ideas continue to circulate around the edges of the franchise. HBO is reportedly developing an animated spin off series following Corlys Velaryon, the character known as the Sea Snake from ‘House of the Dragon.’ Martin is also working with director Dominic Cooke on a stage production titled Game of Thrones, The Mad King, which will follow Lyanna Stark’s forbidden romance with Rhaegar Targaryen and how it leads to Robert Baratheon’s rebellion against King Aerys II, with younger versions of Ned, Varys and Jamie Lannister featured prominently, and performances set to begin at the Royal Shakespeare Theatre in Stratford upon Avon in summer 2026.

With this much of Westeros still being mapped out across television, film, and even the stage, which of these expansions are you most eager to actually see reach a premiere date.