Campaign 3: Bells Hells

 is the third campaign of Critical Role, which began airing on October 21, 2021. It is set on the continent of Marquet and begins in 843 PD, within a year after the events of Exandria Unlimited.

Production
The fact that a third campaign would happen was first confirmed in an announcement on June 10, 2021. The premiere date was confirmed in an announcement on September 30, 2021, and it was announced that it would also air live in select theaters in the United States. The campaign is prerecorded. Unlike previous campaigns, the series does not air on the last Thursday of the month (starting in 2022) to give the cast and crew time to rest and prepare for upcoming episodes and to give viewers time to catch up with the show.

A brand new set was built for the campaign under Marisha's project direction. Matt stated that the idea of a campaign room that had windows fitted with LCD screens for effects comes from a high school art project that became a "white whale" for him. Projection effects were initially "dabbled" with in, many requested by Taliesin, and the new set was designed from the start to support using them more significantly. Named by the production team as the Tavern of Tales, the set's concept art was developed by Shaun Ellis and its lighting and projection design work was developed by Holly Hodges, who both worked in theme park development. It was built by Flip This Bitch, who built sets for Critical Role in the past. Marisha described the set as "a tool, and it's meant to enhance the expression of the story", and she felt that it not only had to look good for the audience but also for the players at the table. All lighting, screens, projections, music, and other atmospheric details are controlled directly by Matt.

In an open letter published a few days before the campaign premiere, Matthew Mercer confirmed that he was working with cultural and sensitivity consultants "throughout the worldbuilding and presentation of Marquet" to ensure that aspects of the continent of Marquet, the main setting for the campaign, would be "lending a familiarity and celebrating aspects of those same languages and cultures without appropriating them". Matthew outlined the general information of each region and let his collaborators to choose the ones they felt the closly connected. He was mostly working on the Oderan Wilds. Basheer Ghouse fleshed out the Hellcatch Valley. In a December 2018 episode of Talks at Google, he had talked about his desire to revisit Marquet in greater depth:

Liam and Ashley were given the chance to playtest their characters, Orym and Fearne Calloway, through the miniseries Exandria Unlimited. They both decided to reuse them in Campaign 3. They were given the option to re-roll their character stats for the new campaign, which Ashley took for Fearne. Guest player Robbie Daymond also chose to re-roll Dorian Storm's stats.

According to Matt, Travis wanted to join the campaign a bit later than the others. To allow him to sit at the table from the first episode, Bertrand Bell, who had previously appeared in, was brought back as a temporary player character. Travis suggested that Bertrand be killed to allow him to introduce his new character, but didn't know when or how his death would occur.

The character art was created by Hannah Friederichs, who was also the official artist of Exandria Unlimited. The animations on the stat cards were created by Max Schapiro.

Closer to the apogee solstice occurred in, Critical Role social media accounts started to changed their avatars, gradually shifting the colors to red to represent the phases of the red moon.

Trivia

 * Between Campaign 2 and Campaign 3, the Critical Role timeslot was filled by Exandria Unlimited and various one-shots and other episodes.
 * The race and class of Fresh Cut Grass were decided by Liam.
 * Sam's previous characters Scanlan and Nott had a race and class suggested, but not decided, by Liam, although Sam took his suggestions both times.
 * To help promote the campaign, Critical Role sponsored three videos from Quincy's Tavern featuring fictional foods and drinks with real accompanying recipes, in a series called "Taste of Marquet". They were posted to TikTok and Twitter.
 * The first features the Mage's Cloak, a drink made of the Marquesian mahika flower often used in potions, drinks and desserts with a recipe for a mocktail of butterfly pea tea.
 * The second features kip kebabs, skewered meat dry rubbed with fusaka spice often sold by street vendors, with a recipe for baked dry rub chicken kebabs.
 * The third features sandberry pies made from sweet sand crystals, mined from mountain caves throughout Marquet and used as an ingredient various desserts and drinks, with a recipe for peach mango hand pies.
 * Campaign 3 featured a guest earlier than any previous campaign, with Robbie Daymond as Dorian Storm appearing in the first episode.
 * Campaign 3 is the first campaign to feature player characters from previous games set in Exandria. Bertrand Bell from and its sequel; Fearne Calloway, Orym and Dorian Storm from Exandria Unlimited; Keyleth from Campaign 1: Vox Machina.
 * The party started their third campaign at the third level.