Brotherwise Games is expanding the rules system behind Brandon Sanderson’s Cosmere Roleplaying Game into a broader tabletop platform called Plotweaver RPG System. The move matters because it could let other creators build games across different genres and settings using mechanics originally designed to support the Cosmere’s varied magic systems and technologies.

Free online rules and design templates will accompany an open alpha beginning on 5 August, using Brotherwise’s original fantasy setting Erstwild; further settings are planned for the autumn, followed by an open beta next year. Keith Baker and Jenn Ellis’s Twogether Studios will develop the genre-hopping game Infinite, while Earthborn Games is making an Earthborne Rangers RPG; a creator contest is due in early 2027, and a Plotweaver crowdfunding campaign is planned for the second quarter of 2027.