By now, you should know the appetite to get more “Game Of Thrones” into the world is a big one. HBO already has the ‘Thrones’ spin-off “House Of The Dragons,” based on creator George R.R. Martin’s “Fire & Blood” novel, coming to the cable network in 2022, and details for another intended spin-off have just been released. A series adaptation of “Tales of Dunk and Egg,” another prequel to the events of “Game of Thrones,” is in early development at HBO, according to Variety.

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The series would be another one-hour drama, this time centering on the adventures of Ser Duncan the Tall (Dunk) and a young Aegon V Targaryen (Egg), set 90 years before the events of “A Song of Ice and Fire” (the book series that most of the “Game Of Thrones” TV series is based on).

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There are already three novellas published based on these “Tales of Dunk and Egg” characters, and fans, who have already been pushing for a story based on these stories, will surely be pleased. To date, the three ‘Dunk and Egg’ novellas include, “The Hedge Knight” (1998), “The Sworn Sword” (2003), and “The Mystery Knight” (2010). The three novellas were later collected and published together as “A Knight of the Seven Kingdoms” in 2015.

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No showrunner or writer is attached yet, but Variety says the series is a priority for HBO.

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That’s not all there is, however. Following Variety’s report, Entertainment Weekly published a piece that said HBO has been meeting with “several top writers” and pitching other ideas based on Martin’s works.

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Among the known ideas being contemplated is a prequel series concept based on Robert Baratheon’s Rebellion – the war for the Iron Throne that upended Westeros, set a couple of decades before the events in Thrones. Bruno Heller, the creator of the acclaimed historical drama “Rome,” a precursor to ‘GOT’s popularity, is one of the writers identified in the piece.

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Clearly, HBO has many ideas and concepts, and writer names could soon be revealed if they amount to anything. The one thread that seems consistent through all the reports that have surfaced over the years: there are no sequels or spin-offs from the original series currently under consideration.

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But a reminder that writers attached to certain ideas doesn’t always mean a series. At one point, HBO had five additional spin-off series in development, and not a one came to fruition.

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One, based on a “Fire & Ice,” created by Jane Goldman (“Stardust,” “X-Men: First Class”) and starring Naomi Watts and a huge cast, even shot a pilot, directed by S.J. Clarkson (“Succession,” “The Defenders”). But even as a priority to the company, the discerning creative-powers-that-be canceled the show before it even began in earnest.

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Four other shows were being worked on. One from writer Max Borenstein (“World War Z“), another from Brian Helgeland (“L.A. Confidential,” “Mystic River“), one from Carly Wray (known for her writing on “Mad Men” and “The Leftovers“) and another from Bryan Cogman, a “Game Of Thrones” TV writer/producer known for writing 10 episodes of season one.

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All were scrapped and all that survived, in the end, was “House Of The Dragon.” Perhaps the good news there is Jane Goldman also came up with that series (along with George R.R. Martin). So while those original concepts may not have been picked up, it’s possible one or more of these writers could come up in connection to “Game Of Thrones” spin-offs down the road one day.