The Sea Snake spinoff has had one of the stranger development paths of any project in HBO’s Game of Thrones universe. It started as an ambitious live-action drama from the creator of Rome and Gotham, nearly sank under the weight of its own budget, and resurfaced years later as an animated series attached to one of the most respected names in adult animation.
Table of Contents
- What the Sea Snake spinoff is actually about
- Why the show moved from live action to animation
- Who’s currently attached to the project
- Where things stand as of Martin’s most recent comments
- Frequently asked questions about the Sea Snake spinoff
What the Sea Snake spinoff is actually about
The Sea Snake spinoff, previously known by the working titles Nine Voyages and 9 Voyages, is planned as a series centered on Corlys Velaryon, the character played by Steve Toussaint in House of the Dragon. According to A Wiki of Ice and Fire, the show would take place decades before the events of House of the Dragon, following Corlys on his nine legendary sea voyages aboard his ship, also named the Sea Snake.
GameRant’s coverage describes the scope of what those voyages could show audiences: Corlys traveled to Yi Ti, Leng, the Shadow Lands of Asshai, N’ghai, Mossovy, and the Shivering Sea, visiting corners of George R.R. Martin’s world that neither Game of Thrones nor House of the Dragon has ever depicted on screen. The Wiki of Westeros entry adds a specific detail from the source material — on his second voyage, Corlys sailed as far as Asshai, and tales suggest half of the men who traveled with him never returned from the mysterious city.
Why the show moved from live action to animation
The Sea Snake spinoff was originally developed as a live-action series with Bruno Heller, the creator of Rome and Gotham, attached to write it. Martin explained the reasoning behind the eventual shift directly, according to TVLine’s reporting: because Corlys’s voyages take place mostly aboard a ship at sea and would feature a different port every week, “budgetary constraints would likely have made a live action version prohibitively expensive.”
Martin framed the change as a creative opportunity rather than a step down, telling fans, “There’s a whole world out there. And we have a lot better chance of showing it all with animation. So now we have three animated projects underway.” That comment placed the Sea Snake alongside at least two other animated concepts HBO was developing at the same time as part of a broader strategy to expand the franchise’s world-building without the enormous costs live-action production would require.
“We have a lot better chance of showing it all with animation,” Martin said of the decision to move the Sea Snake project away from live action.
Who’s currently attached to the project
The Sea Snake spinoff picked up serious animation credibility once Genndy Tartakovsky became linked to the project. According to Cartoon Brew’s reporting, HBO chief Casey Bloys mentioned the animated Sea Snake series among several Game of Thrones extensions currently in development, with Tartakovsky — the creator of Samurai Jack, Dexter’s Laboratory, and Primal — reportedly involved.
GameRant’s coverage notes the series would be set before Corlys marries Rhaenys Targaryen, the character known as “The Queen Who Never Was,” and before he becomes entangled in the Dance of the Dragons depicted in House of the Dragon. Tartakovsky’s involvement, while not yet formally confirmed by HBO itself, has generated real excitement among animation fans given his reputation for atmospheric, action-driven storytelling that would suit Corlys’s globe-spanning adventures.
Where things stand as of Martin’s most recent comments
The Sea Snake spinoff remains officially unconfirmed by HBO, but Martin has continued to signal it’s still alive. Wiki of Thrones reported that during a virtual event with author David Anthony Durham, Martin directly confirmed the Sea Snake spinoff remains in development, addressing fan concern that had built after HBO’s production partner briefly removed Game of Thrones prequel titles, including Sea Snake and Ten Thousand Ships, from its website.
HBO CEO Casey Bloys has been careful to temper expectations around any of the franchise’s in-development spinoffs, previously stating that none of the various Game of Thrones extensions in the works “is close to a green light or anything… but we are always working on different scripts and ideas.” That caution, paired with Martin’s own periodic reassurances that the project hasn’t been abandoned, has left the Sea Snake spinoff in a familiar spot for Game of Thrones expansion projects: genuinely real, actively discussed, and still years away from an actual greenlight.
For more on the character at the center of this potential series and his role in the current television timeline, Read more: House of the Dragon Season 4’s Filming Timeline covers when the show featuring an older Corlys Velaryon returns to production. And for more on how Martin’s franchise continues expanding even during a difficult personal stretch for the author, Read more: George R.R. Martin’s Winds of Winter Update breaks down his recent comments on the state of his ongoing work.
Cartoon Brew’s full report on Genndy Tartakovsky’s potential involvement goes deeper into what his creative style could bring to the project, and it’s worth reading in full here.
Frequently asked questions about the Sea Snake spinoff
What is the Sea Snake spinoff about? The Sea Snake spinoff would follow Corlys Velaryon on his nine legendary sea voyages to distant lands including Yi Ti, Asshai, and the Shadow Lands, decades before the events of House of the Dragon.
Why did the Sea Snake spinoff become an animated series instead of live action? George R.R. Martin said budgetary constraints made a live-action version, which would require building a new port setting every episode, prohibitively expensive, making animation a more practical choice.
Who is attached to direct the Sea Snake animated series? Genndy Tartakovsky, known for Samurai Jack, Dexter’s Laboratory, and Primal, has reportedly been linked to the project, though HBO has not formally confirmed his involvement.
Has HBO officially greenlit the Sea Snake spinoff? No. HBO CEO Casey Bloys has said none of the network’s Game of Thrones spinoffs in development are close to being greenlit, though George R.R. Martin has confirmed the project remains active.
Who plays Corlys Velaryon in House of the Dragon? Corlys Velaryon, also known as the Sea Snake, is played by actor Steve Toussaint in House of the Dragon.
