The Game of Thrones universe is set to expand with the transition of the 9 Voyages series, also known as The Sea Snake, from a live-action to an animated format, as per George R.R. Martin's recent blog post. The series, developed by Rome creator Bruno Heller, is designed to follow Corlys Velaryon's legendary adventures. Although the switch to animation was driven by budgetary concerns due to the expansive and sea-based nature of Velaryon's voyages, Martin fully supports this decision, acknowledging that animation offers a better chance to explore the vast world he has created.

Along with 9 Voyages, HBO is also considering two other animated spin-offs, and while none have received the green light yet, progress seems to be imminent. The success of HBO's House of the Dragon has paved the way for more related content, with its second season ready to air in early summer and with other spin-offs also in discussion. Martin mentions that even shelved projects in Hollywood can be revisited, possibly indicating that previously canceled series could be revived in a different format in the future.

Which actors are set to reprise their roles in the upcoming Game of Thrones spin-offs?

Specific casting details about the animated series and other live-action Game of Thrones spin-offs have not been confirmed, but Steve Toussaint, who played Corlys Velaryon in House of the Dragon, is expected to be involved in the 9 Voyages series. Kit Harrington is also rumored to return as Jon Snow in the separate spin-off Snow, which follows his character's story after the events of the main series.

Game of Thrones, based on George R.R. Martin's A Song of Ice and Fire series, has been one of the most popular and influential TV shows of the past decade, spawning a vast range of merchandise, games, and additional media content. Its lore-rich universe provided ample opportunity for diverse storytelling, evidenced by the numerous spin-offs and related projects, such as House of the Dragon and the planned animated series. The shift towards animated content signifies an attempt to explore more of this complex universe without the limitations of live-action production constraints.