“Game of Thrones,” the medieval fantasy epic series that premiered on HBO way back in 2011, has undoubtedly left an indelible mark on the cable network’s content development. It would certainly explain the many spinoffs they have been conceptualizing in the hopes of creating a new series set on Westeros, as based on the works of George R.R. Martin. Progress in developing these spinoff shows have been hit and miss. Thus far “House of the Dragon,” based on Martin’s “Fire and Blood,” is one close to starting production. But HBO already has some new ideas to replace the other concepts that failed to pan out.

According to Deadline, three new series pitches set in the world of “Game of Thrones” is being mulled over by HBO. Working titles for the planned shows are thus: “10,000 Ships,” “Flea Bottom” and “Sea Snake.” Aside from potentially “Flea Bottom,” the other series are not set in the “present” timeframe of the original eight-season show, but rather in the past. In fact, they will follow two key figures in the war-torn history of Westeros. And of them, “Sea Snake” is furthest along in concept, thanks to already having its own show-runner in Bruno Heller (HBO’s “Rome” and Fox’s “Gotham”).

“Sea Snake” revolves around the life of Corlys Velaryon, a noble who was of similar Valyrian stock as the ruling Targaryen dynasty on the Iron Throne. Corlys is nicknamed Sea Snake after his self-designed flagship, which he used to travel the seas around Westeros and even the far east of Essos. Aside from his explorations, possible storylines for this series might involve Corlys helping Prince Daemon Targaryen become King of the pirate haven Stepstones, and his eventual involvement in the Dance of the Dragons, the Targaryen Civil War of 129-131AC.

Of the other two “Thrones” spinoffs, “10,000 Ships” has another workable plot, since it concerns Nymeria, last Princess of the Rhoynar Kingdom on Essos. After seeing her realm conquered by the dragon-riding Valyrian Empire, she evacuated her surviving people on the titular fleet of ships across the Narrow Sea to Dorne, in southern Westeros. There, she would enter marriage with a local lord, Mors Martell, establishing a united Principality in Dorne and their family as its generational rulers. Even less info is available on “Flea Bottom,” other than it is centered on the titular slum in the Westeros capital of King’s Landing, birthplace of some key “Thrones” supporting characters and a prominent original series setting.

It will still take a long while before these projects bear any fruit ripe for production. HBO already has “House of the Dragon” ready to start shooting by April, while “Tales of Dunk and Egg” as well as an unspecified mature animated series, are just behind in the development process.

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