Game Workshop and Henry Cavill's Warhammer 40,000 project has been in the works for two years now, with the most recent news being that renowned horror director, writer, and showrunner Mike Flanagan—known for projects such as the Carrie miniseries or The Haunting of Hill House—has joined the crew and will be writing the script.

Otherwise mum's the word concerning this project, with very little being shared about it. In fact, the most we've got so far has been Flanagan recently chatting about a few bits and pieces during his Carrie press tour.

Flanagan describes the process of discovering all that Warhammer 40,000 has to offer as "a very cool and unexpected on-ramp into it, which I think is very exciting. I’m sworn to secrecy on all of it, but I'm having the time of my life working on it."

It's good to hear that, at the very least, he's having fun. There's certainly a lot of material to work with here and a lot to get stuck into for a horror director. I haven't been completely convinced by some of Flanagan's projects. Midnight Mass took too long to get going, The Fall of the House of Usher felt confused, and The Haunting of Bly Manor was too much of a Hill House clone. Though, I am still intrigued to see how this Warhammer 40,000 will turn out, especially with Cavill working on it.

I actually quite enjoyed Amazon's Secret Level Warhammer 40,000 short. You can hardly go wrong when focusing on the Deathwatch, but the gore and the violence still went down really well in my book. So I'd like more of that please.

Mike Flanagan has shared some new details for the upcoming Warhammer 40K series being developed by Amazon Studios. The horror maestro is working on the show alongside Henry Cavill, who has been developing the IP for years.

Speaking in a new interview, Flanagan teased how much he's enjoying the project since being brought on earlier in 2026. "Henry Cavill would be furious if I divulged anything about what we're working on," he told Deadline. "All I can say is that Warhammer is a fascinating world. The challenge, as anyone familiar with it knows, is finding a way in – it's so big. There are 700 novels, discounting the [table top] game, the interactive elements and so much of the rest of the lore."

Flanagan went on to reveal that they have found "a very cool and unexpected on-ramp into it, which I think is very exciting." He added: "I'm sworn to secrecy on all of it, but I’m having the time of my life working on it."

The series has been a long time coming with Cavill's partnership with Games Workshop first being announced three years ago. At the time, the former Superman star shared a statement on Instagram, which read: "Together, we've been sifting through the plethora of incredible characters and poring over old tomes and texts. Our combined efforts have led us to a fantastic place to start our Universe, which has been agreed upon by those up on high at both Amazon and Games Workshop. That starting place shall, for now, remain a secret."

The latest update came in July when Flanagan was brought on board as Games Workshop CEO Kevin Rountree said work was beginning on scripts. However, he again promised that it would not be a quick process. "This is a long-term partnership with Amazon – and these adaptations will take years to bring successfully to market," Rountree wrote in the company's annual report.

For more, check out our guide to all the upcoming video game movies you need to know about.