Fifteen Seasons of HBO’s Best Fantasy Epic? That’s the Smartest Move on TV
Game of Thrones still wears HBO’s fantasy crown with eight seasons, but a new contender is poised to blow past that mark — leaving short-lived cult favorites like Carnivàle in the dust.
HBO might finally have a fantasy show that outlasts Game of Thrones. No, not House of the Dragon. The real marathoner here could be A Knight of the Seven Kingdoms, the Dunk-and-Egg spinoff that quietly has the runway to run much, much longer than anything else in the network's fantasy stable.
How HBO's fantasy shows stack up so far
- Game of Thrones: 8 seasons, record holder, wrapped in a blaze of controversy
- Carnivale: 2 seasons, canceled before it finished its story
- His Dark Materials: 3 seasons and out
- House of the Dragon: expected to end with Season 4 in 2028 (Season 3 lands this summer)
The one that could beat Thrones
A Knight of the Seven Kingdoms is HBO's other Thrones spinoff, based on George R.R. Martin's novella series The Tales of Dunk and Egg. It follows Ser Duncan the Tall, a wandering hedge knight, and his sharp, not-so-simple squire, Egg, as they trek across Westeros. Season 1 dropped earlier this year and, so far, it is the network's best bet for a long-haul fantasy slate.
Here is where things get eyebrow-raising: showrunner Ira Parker has openly talked about the series potentially running 12 to 15 seasons. That is not a typo. Only three Dunk and Egg books exist right now, but Martin has sketched out ideas for roughly a dozen in total. Parker's dream version is basically: adapt the three we have, then keep going as Martin fills in the rest, treating the whole thing as an ongoing chronicle rather than a short prequel fling.
Why 12–15 seasons is not as wild as it sounds
The Dunk-and-Egg timeline is huge. The published novellas cover about three years of their partnership. The lore in the Thrones universe hints at something like five more decades of adventures ahead of them. We know the outlines of where they end up thanks to Westerosi history, but not the specifics.
Parker's ideal structure sounds like a series of time-boxed arcs: spend a few seasons with Egg as a kid traveling with Dunk; jump forward about a decade for another four or five seasons; then jump again for the final stretch. Think character growth in real time, not a single sprint.
The practical headaches
Pulling that off is... a lot. You have to keep bringing back Peter Claffey (Dunk) and Dexter Sol Ansell (Egg) over many years, sustain audience interest across long breaks and time jumps, and convince HBO to commit to a creative plan that spans actual eras. It is an enormous long-term gamble.
If it works, though, you get the whole story. Not just the highlights we already know from lore, but the big moments we have not seen yet, and the connective tissue that makes their ending land with actual finality. That is the kind of closure most fantasy adaptations never get.
What Thrones taught HBO (the hard way)
Game of Thrones topped out at eight seasons, and that cap was not HBO's idea. Showrunners David Benioff and D.B. Weiss always pictured about seven seasons; HBO would have happily kept going. Martin has said he thought the saga needed at least 10 seasons, maybe more, to breathe. Given that the biggest knock on Season 8 is how rushed it felt, it is hard to argue.
So if the Dunk-and-Egg team really wants to swing for 10, 12, even 15 seasons, this is HBO's chance to show it learned the right lessons. The show costs less than Thrones or House of the Dragon, the ratings are strong, and a long, patient adaptation would avoid the compromises that kneecapped other fantasy runs.
Why HBO would want this
Only two Thrones spinoffs have actually made it to air so far: House of the Dragon and A Knight of the Seven Kingdoms. With HotD winding down in a couple of years, having a dependable, long-term Westeros series on the books is a strategic win for both the network and HBO Max. Season 2 of A Knight of the Seven Kingdoms is already slated for 2027, which tells you they are thinking in years, not months.
Where things stand right now
A Knight of the Seven Kingdoms Season 1 is streaming on HBO Max. Season 2 is set for 2027. If Parker gets his wish and Martin keeps feeding the pipeline, Dunk and Egg could end up carrying HBO's fantasy record past Thrones with room to spare. Ambitious? Absolutely. But for once, the material actually justifies the ambition.