A new Critical Role anthology novel, "The Mighty Nein – Stories Untold," has quietly signalled how the franchise will treat its expanding multimedia universe going forward, confirming that future stories will follow the canon established by the animated TV adaptations rather than the original tabletop actual-play campaigns. The revelation matters because it settles long-running fan speculation about whether Critical Role would adopt a "canon versus legends" split akin to Star Wars, or instead fold all adaptations into a single evolving continuity, with the answer favouring the more accessible TV version as the reference point for future material.

The clearest evidence comes from a chapter by Dani Carr, "The Fall Will Kill You," which follows drow wizard Essek Thelyss and references his mother's illness, typhros, a plotline invented for The Mighty Nein TV series rather than the original campaign, where Essek's motivations were rooted purely in ambition. Critical Role has form for this kind of divergence, having previously altered storylines in The Legend of Vox Machina and The Mighty Nein to accommodate actor Ashley Johnson's limited availability. While some fans may prefer the more antagonistic actual-play version of Essek, the shift towards TV canon reflects practical reality, since a roughly 12-episode series is far easier for new audiences to access than 100-plus hours of original streamed campaign footage.