Every Game of Thrones Spinoff Still in the Works — What’s Actually Coming
After years of hype, the Game of Thrones spinoff slate has been slashed to a handful still in active development — these are the survivors.
Trying to track the Game of Thrones universe right now feels like juggling Valyrian steel. Some projects are real and moving, some were real and got torched, and some are technically alive but sitting in cold storage. Here’s where things actually stand, without the smoke and mirrors.
First, the reset: what’s paused or gone
The Jon Snow series? Kit Harington put that one in a deep freeze, saying it’s "off the table for the foreseeable future" after he stepped back when the concept didn’t click. HBO’s boss backed him up on that. The Naomi Watts prequel (nicknamed Bloodmoon), set during the Age of Heroes and leading into the Long Night, filmed a pilot and still got shelved. And Flea Bottom, the King’s Landing underbelly show, isn’t happening either.
So what should you actually keep an eye on? George R.R. Martin says there are "five or six" spin-offs in play. Two are actively moving, with four more in development. Here’s the current board.
A Knight of the Seven Kingdoms
This one’s real and already thinking long-term. It follows Ser Duncan the Tall and his pint-sized royal squire, Aegon V Targaryen (Egg), roughly 90 years before A Song of Ice and Fire. It adapts Martin’s Dunk and Egg novellas. Martin is the series creator, with Owen Harris (Black Mirror, Mrs. Davis) directing episodes. Season 1 tackled 1998’s The Hedge Knight across six episodes.
Before Season 1 even premiered, the show locked a Season 2 that adapts The Sworn Sword, with a 2027 target. In January 2026, series creator Ira Parker said filming on Season 2 was already underway and they’d banked their first stretch of days:
"We [took] a month break for Christmas, and then for this and premiere week, and then we come back and do a lot of work. So it’s a weird schedule, but I’m happy we got those 10 days in before. We’ve shot some very nice stuff."
House of the Dragon
Still the flagship. Set nearly 200 years before Game of Thrones, it zeroes in on the Targaryen civil war, the Dance of the Dragons. It’s based on parts of Fire & Blood and stars Emma D’Arcy as Rhaenyra Targaryen and Olivia Cooke as Alicent Hightower, with Ryan Condal as showrunner and Miguel Sapochnik as executive producer. Season 1 landed to real acclaim; Season 2 went darker and meaner.
HBO’s plan is mercifully clean: four seasons total, then out. Condal has confirmed the four-season run, which should cover the Fire & Blood storyline without dragging this out. The much-teased Battle of the Gullet is on deck. Expect Season 3 in summer 2026, with the final season arriving in 2027. And yes, the Season 3 trailer already kicked up plenty of hype.
Aegon’s Conquest
This one reaches back to the start of the dynasty. After the Doom of Valyria, Aegon and his sister-wives, Visenya and Rhaenys, bring dragons to Westeros and unite the Seven Kingdoms through fire and strategy, crowning Aegon as the first king. Screenwriter Mattson Tomlin said in July 2025 that he had multiple drafts in play and was working closely with Martin to lock the best version. He confirmed he officially came aboard in February 2024.
Thanks to House of the Dragon, Aegon’s motivation is clearer: in that show, King Viserys shares that Aegon foresaw a brutal winter sweeping down from the North and believed dragonfire would be humanity’s best defense against it. That angle should carry into this series.
The Sea Snake (formerly Nine Voyages)
An epic about Corlys Velaryon’s nine voyages that built his fortune, fame, and the most feared fleet in Westeros. Bruno Heller (Rome) wrote the pilot draft. The title shifted from Nine Voyages to The Sea Snake because no one wanted two spin-offs with numbers in the title while Ten Thousand Ships is in the mix.
The big pivot: in early 2024, the project moved from live-action to animation for budget reasons. Martin has said that staging weekly sea epics with new ports was simply too expensive. Expect sea battles, salty diplomacy, scary weather, and a tour of places far from Westeros. Steve Toussaint plays Corlys in House of the Dragon; whether he voices him here is TBD, though he’s said he’d love to return.
Ten Thousand Ships
Set about 1,000 years before Game of Thrones, this saga centers on Princess Nymeria, the Rhoynar leader who founded Dorne. She’s legendary enough that the show’s title refers to the fleet that carried her people from Essos to Dorne — and to the moment she ordered those ships burned to erase any thought of retreat. Game of Thrones even nodded to her twice: Arya’s direwolf and one of the Sand Snakes (played by Jessica Henwick) carry her name.
Development has seesawed. Martin said in March 2022 that Amanda Segel (Person of Interest, Shooter) had written a couple of drafts. Later, writer-producer Brian Helgeland said the version he worked on was set aside because the era felt too distant from the main series. Then in June 2024, Martin revealed that newly minted Pulitzer Prize winner Eboni Booth had been hired to write the pilot, adding:
"When not writing and producing her prize-winning plays on- and off-Broadway, she has been kept busy by me and HBO."
If this sails, you’re looking at a large-scale, female-led historical epic that finally digs into the Rhoynar — water mages, lost cities, and the outsiders who helped reshape Westeros.
The Golden Empire
Still early, still mysterious. Set in Yi Ti on the far eastern edge of Essos, the show draws on Imperial China for inspiration. Yi Ti barely shows up in the original series and doesn’t get a proper visit in the novels either, so expect fresh ground: sprawling cities, imperial power plays, and trouble spilling in from the Shadow Lands. The team will lean on The World of Ice & Fire (2014) for the foundational lore.
Martin has teased progress — and he’s seen art that clearly hit the spot:
"I am not allowed to talk about most of what’s happening, except to say that things are moving very fast, and I love love love some of the concept art I am seeing."
He’s also said a "great young writer" is on it. Names are under wraps for now.
The bottom line
Plenty of Westeros on the horizon, with two series actively moving and four more in development. Some long-rumored shows are paused or burned down, but the ones rolling forward actually look focused — and, crucially, budget-aware. Which one are you most curious about?