In the age of constant TV revivals, the huge success off Game of Thrones would make it a natural choice revive at some point after its eighth and final season ends. But HBO says it will never happen.

The cast are currently filming the final six episodes of the Primetime Emmy Award-winning series in a gruelling and ambitious production schedule that will delay transmission until next year.

HBO isn't yet talking about what those episodes will entail from a story perspective, but network boss Casey Bloys is already ruling out the possibility that the door will be left open for revisiting years from now.

"That's not happening," he told The Hollywood Reporter. "This story, A Song of Fire and Ice, is done. There's no revival, reboot, spinoff talk."

The Game of Thrones cast have previously promised that the eighth season truly will be bigger than ever in every possible way— yet 'bigger' doesn't necessarily equate to extended episodes, according to Bloys.

"It really will be dependent on when the showrunners get the cuts and what they're happy with," he said.

"Everything on Game of Thrones is driven by their desire to make the best show possible. When we're going to air, how long the episodes are — we're taking their lead on what they need."

While a proper revival is seemingly out of the question, Bloys did let slip at the TCA press tour on Thursday that there may be ancestral connections between Game of Thrones and the five prequel spin-offs currently in development.

Game of Thrones returns next year on HBO in the US and Sky Atlantic in the UK.

From: Digital Spy