HBO has officially ordered a “Game of Thrones” prequel.

Fans won’t have to leave the world of Westeros just yet as Jane Goldman (“Kick-Ass”, “X-Men: First Class”, “Kingsman: The Secret Service”) has been given the green light to write the series for the pay-cable channel.

RELATED: ‘Game Of Thrones’ Star Natalie Dormer Believes ‘Feminist Men’ Are ‘Part Of The Solution’ To Achieve Gender Equality In Hollywood

The new fantasy/drama will take place thousands of years before Jon Snow became the King of the North, which means the series will descend from the Golden Age of Heroes and explain the origin of the white walkers and every other unsolved mystery.

Goldman and “Game of Thrones” author George R.R. Martin have co-created the project, and will both serve as executive produce.

RELATED: Emilia Clarke Admits She Was An ‘Emotional Wreck On Set’ Of ‘Game Of Thrones’ Series Finale

She and Martin collaborated on the story, while Goldman alone wrote the screenplay.

Martin took to his blog to confirm the news of the upcoming series, but said he will only consult with Goldman on scripts, not write them entirely.

Later, Martin promised his fans, who are long-awaiting the next book in his “Game of Thrones” series, that “Winds of Winter” is coming: “And yes, before you ask, work on ‘Winds of Winter’ continues, and remains my top priority. It is ridiculous to think otherwise. If I wasn’t busy with ‘Winds’, don’t you think I’d be scripting one or more of these pilots myself? It’s not as if I’ve never written for TV…”

He even suggested a name for the prequel, “My vote would be ‘The Long Night’, which says it all, but I’d be surprised if that’s where we end up. More likely HBO will want to work the phrase ‘Game of Thrones’ in there somewhere.”

The final season of “Game of Thrones” is set to air in the summer of 2019.

Click to View Gallery
Game Of Thrones: Most Shocking Deaths…So Far