Brandon Sanderson and Brotherwise Games have been hard at work producing Cosmere tabletop games since 2020. In addition to board games, the first core rulebooks for a full-on Cosmere RPG launched just last year after a very successful crowdfunding campaign. And now in 2026, the highly anticipated Mistborn expansion is up for preorder.The Mistborn Handbook, Campaign Guide, and Welcome to Scadriel guide are available to buy at Amazon with a November 4 release date.The Mistborn Handbook is the main thing…