Mistborn and Stormlight Films
These rights are held by DMG Entertainment, and they've been very good at working with me and showing me things. They have scripts for both Mistborn and The Way of Kings, which they are actively trying to make happen in Hollywood.
One way they're approaching this is to do a Stormlight VR experience, which we've talked about before. This is less about making a video game, and more about making something to show off to studios to kind of immerse them in the setting of the books. As I determined early on, this is an interesting but weird world, and having visuals (like the art in the books themselves) helps a lot with bringing people around to understanding.
They do plan to release the VR experience to fans on Steam, for those with VR headsets. It's not intended to be a full game, as I said, more a demo of the Shattered Plains—you'll get to personally experience the Shattered Plains from the novels and interact with the characters and creatures that inhabit them. We'll do some posts on it in coming months as it gears up to be released, and I've invited the developers to do some guest posts on my blog.
Regardless of what happens on the film and television front here, at the very least you have that to look forward to!