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Critical Role Names Brennan Lee Mulligan as Game Master for Campaign Four

The campaign debuts October 2 in a new campaign set outside Exandria with an unconfirmed game system

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© Critical Role
Critical Role's Matt Mercer is relinquishing control of their fourth campaign to D20's Brennan Lee Mulligan.

Overview

  • Brennan Lee Mulligan will serve as the full-time Game Master, replacing founding DM Matthew Mercer for Campaign Four
  • The series is slated to premiere live on October 2, 2025 across Beacon, Twitch, and YouTube
  • For the first time a core campaign will explore a brand-new fantasy world rather than the established Exandria setting
  • Critical Role has not yet confirmed whether it will use Dungeons & Dragons or its proprietary Daggerheart rules for the new series
  • The announcement coincides with Critical Role’s tenth anniversary and follows expansion into animation, a forthcoming video game, and Mulligan’s renewed Dimension 20 deal