After a 16-year wait and a landmark Apple TV deal, the fantasy author is writing the script himself

Brandon Sanderson Is Writing the Mistborn Screenplay Himself

Brandon Sanderson, one of the most popular fantasy authors working today, has given fans an update that many thought might never come: the Mistborn screenplay is underway. As of early February 2026, progress bars on Sanderson’s personal website show the first draft sitting at 10 percent complete, and the author is reporting that he is “really happy” and “confident” about where things stand.

A 16-Year Road Through Development Hell

The Mistborn adaptation has had one of the more turbulent histories in modern fantasy publishing. Paloppa Pictures LLC acquired the film rights in 2010, but let the option expire in 2014. A subsequent deal with DMG Entertainment resulted in a screenwriter being attached in 2017 — F. Scott Frazier — but the project stalled. Sanderson himself attempted to write a screenplay as early as 2020, which he tracked publicly on his website, but that effort ultimately led nowhere. A proposed collaboration with Epic Games and Fortnite creative director Donald Mustard collapsed in 2024 due to creative differences. Then in January 2026, Apple TV announced it had secured the rights to Sanderson’s entire Cosmere universe — the shared fictional universe that contains both Mistborn and The Stormlight Archive — in what was described as an unprecedented deal.

Sanderson’s Creative Control and the Apple Deal

What distinguishes the Apple arrangement from previous attempts is the degree of creative involvement Sanderson has been granted. He announced via Reddit and YouTube that he will be writing the Mistborn screenplay himself over approximately five months, treating it as full-time work. He also confirmed he will serve as co-showrunner on the planned Stormlight Archive television series, though the search for a second showrunner is still ongoing. In a post on X, Sanderson wrote: “Digging back into Mistborn for the screenplay, and enjoying writing some new High Imperial for the first time in a long while!” The reference to “High Imperial” — an in-universe dialect used in the Mistborn world — confirmed to fans that he had moved beyond outlining and into actual script pages. Sanderson acknowledged his limitations honestly: “I am not an expert screenwriter. I’ve only written one other screenplay in my life. So this is number two. So, I’ll need a lot of help.” He noted that he has been working with Hollywood advisors experienced in screenplay craft. You can follow updates on Sanderson’s official site where his progress bars track the project in real time.

What is Mistborn?

For those unfamiliar, Mistborn: The Final Empire — the first novel in Sanderson’s original trilogy — is set in a world where a dark lord triumphed over the prophesied hero a thousand years ago. The story follows a group of thieves with supernatural powers, known as Allomancers, who plan a heist against the ruling Lord Ruler. The series is famous for its deeply intricate magic system, its political complexity, and its subversive take on classic fantasy tropes. Sanderson began writing it after reading the Harry Potter series and asking himself what a fantasy world would look like if the prophesied hero had failed. The Tor Books series page offers an overview of the full Cosmere publishing history for readers new to the work.

Implications for Fantasy Adaptation

The Mistborn deal arrives at a moment when fantasy adaptations are under intense scrutiny. Amazon’s Rings of Power drew mixed reviews and viewership declines. Netflix’s The Wheel of Time — another Sanderson-adjacent property, as he completed that series after Robert Jordan’s death — was cancelled after three seasons. The prospect of a major Mistborn film, followed by a Stormlight Archive series, represents one of the most ambitious fantasy adaptation projects ever announced. Apple TV, buoyed by the critical success of Slow Horses, Silo, and Severance, has positioned itself as a home for quality genre storytelling.

Temporary Impact on Sanderson’s Novel Writing

The screenplay work will temporarily slow Sanderson’s prolific output as a novelist. He has been working on the Ghostbloods series — the third era of Mistborn — and recently finished the first book, but the two remaining volumes will need to wait while he completes the screenplay. Sanderson addressed this directly, saying he does not intend “to get too distracted to do books.” His next novel, Ghostbloods Book One, remains on track for a 2028 release.

A New Standard for Author Involvement

If the Mistborn film succeeds, it could establish a new model for how major fantasy authors engage with adaptations of their work — not as passive rights sellers, but as active creative participants. Sanderson’s situation is unusual: he has both the name recognition and the industry leverage to demand this kind of involvement. Not every author gets that opportunity. But his approach, and Apple’s willingness to accommodate it, may reshape expectations for future deals. The Hollywood Reporter has covered the unprecedented scope of the Cosmere deal in detail.