Dimension 20
Dimension 20 sold 15,000 tickets to a live show at Madison Square Garden in the span of four days, in January 2025. Ticketmaster's surge pricing algorithm briefly sent some of those tickets into the thousands of dollars. The prices rose higher than comparable Taylor Swift concerts. Dimension 20 issued a statement saying they had been unaware of the dynamic pricing system and had opted out for all future events.
What drew that crowd was an actual play show: real people playing a tabletop role-playing game in front of cameras. The show launched in 2018 on Dropout, a streaming service spun out of CollegeHumor. Its creator described the moment as a 'renaissance' of actual play programming. In January 2020, a mass layoff left its host as the only creative staff member remaining on payroll. Yet the show not only survived that crisis but eventually expanded into live arena events, a webcomic, and its own home-brewed game system.
How did a production that began inside a company in financial freefall grow to fill Madison Square Garden? What makes its storytelling different from other role-playing shows? And why have academics started writing serious papers about it?
CollegeHumor's financial troubles stemmed from a pivot to Facebook video in the late 2010s, a strategy built on metrics that later proved inaccurate. By late 2019, InterActiveCorp, the company's owner since 2006, was exploring a sale of the business.
California's stay-at-home orders were in effect as the show continued production remotely during that period. The parent company eventually took the Dropout name in full and redirected its output heavily toward Dimension 20.
On the 24th of May 2021, Mulligan announced that in-person, in-studio production would resume. The return adhered to COVID safety guidelines set by SAG-AFTRA and other film guilds and production unions. By 2024, the company had moved into a more positive financial position, able to hire staff well beyond its initial skeleton crew.
In 2023, the SAG-AFTRA strike initially shut down production on the show. Dropout CEO Sam Reich stated that, as Dropout is not a member of the AMPTP, the company might reach an interim agreement with the union. Reich added: "but we'll only do that, obviously, if we get the blessing of the union and the buy-in of our performers." By August 2023, all Dropout shows had resumed production. They were operating under a non-struck SAG-AFTRA contract covering non-dramatic programming.
Beginning in 2022, Dropout began auctioning off miniatures from previous Dimension 20 seasons, with proceeds going toward future production and charitable causes.
The original Dimension 20 set surrounded its players with a colored geodesic dome. Mulligan described the concept as an homage to the polyhedral dice central to role-playing games. He called it a 'crystal cave' that could shift register entirely. A frosty fantasy atmosphere could give way to a science-fiction vibe through lighting changes. Images could be projected on the dome's panels, allowing the show to shift genre without changing its physical space.
In 2020, a new set was built with curved walls, though cast and crew still refer to the space colloquially as 'the dome.'
Kenny Keeler, the show's original director of photography, began working with a Dana dolly. In the years since, director Michael Schaubach has overseen the addition of an LED projection system. This system can place shadows and animation directly onto the set walls.
Graham Sheldon, the director of photography for the 2022 campaign Neverafter, described a typical setup using five cameras. This included overhead shots capable of extreme closeups of the miniatures and battle maps on the table. Sheldon noted that the improvisational nature of the game often required operators to hop onto additional cameras to follow unscripted moments. Second-unit director of photography Kevin Stiller shot miniature closeups, sometimes while the main season was still filming in parallel.
Several days of editing follow each batch of recorded episodes. This allows for the removal of pauses and the addition of character art, illustrations, and footage of battle terrain. Critical Role had established a format of presenting the full table through a multi-camera composite. Dimension 20 takes the opposite approach, presenting each camera feed full screen. A typical episode runs between two and three hours.
In the campaign Burrow's End, audio recordings were incorporated into episodes as in-world artifacts.
Brennan Lee Mulligan has been running Dungeons and Dragons games since he was 10 years old. Before Dimension 20, he worked as a writer for live-action role-playing games. He also ran a private campaign with most of the players who would become the show's principal cast. Only Lou Wilson and Ally Beardsley were not part of that earlier game.
The show's main format organizes around a recurring group of six players known as the Intrepid Heroes. These six players are Emily Axford, Ally Beardsley, Brian Murphy, Zac Oyama, Siobhan Thompson, and Lou Wilson. Their campaigns run between seventeen and twenty episodes, with Mulligan as Dungeon Master. As of 2025, nine Intrepid Heroes seasons have aired. They include three Fantasy High seasons, two Unsleeping City campaigns, A Crown of Candy, A Starstruck Odyssey, Neverafter, and Cloudward, Ho!
Emily Axford and Brian Murphy both came from Not Another D&D Podcast. Mulligan had cited that show as one of his inspirations when creating Dimension 20.
Shorter Side Quest campaigns, running eleven or fewer episodes, rotate in between the main campaigns. Aabria Iyengar is the most recurring guest Game Master, having led Side Quest campaigns four times. Guest players are generally drawn from CollegeHumor alumni or other actual play shows, with occasional exceptions. Dungeons and Drag Queens featured notable contestants from RuPaul's Drag Race.
Most campaigns use Dungeons and Dragons 5th edition. For the 2024 campaign Never Stop Blowing Up, the production developed an entirely original system based on Kids on Bikes. In November 2024, Dropout released this system for free on their website. Producer Carlos Luna was candid about its limits: "We're not game designers. This is not a system that will stand the test of time. Hell, you'd be lucky if it lasted one whole session. But, I will say I think that would be a really fun session."
An upcoming campaign called City Council of Darkness will use a modified version of Vampire: The Masquerade, in collaboration with White Wolf Publishing. Jen Lennon of Kotaku described the decision as "kind of a huge deal," noting that previous Intrepid Heroes campaigns had never moved to a system truly outside the Dungeons and Dragons framework.
The full cast of The Adventure Zone appeared together in the Tiny Heist campaign in early 2020.
A series of six live events titled Time Quangle ran across Ireland and the United Kingdom in April 2024. At the start of each show, the cast rolled dice and used bingo machines to determine their characters and setting. They drew from five past campaigns: Fantasy High, The Unsleeping City, A Crown of Candy, A Starstruck Odyssey, and Neverafter. Dropout recorded each performance and released them as a six-episode series in late 2024.
A series finale called Quangle Quest took place at the Climate Pledge Arena in Seattle on the 20th of July 2025. Performers were equipped with 'Bracers of Quangling,' allowing them to choose which of their characters they wanted to play. Dropout released Quangle Quest on the 10th of December 2025.
A performance called Gauntlet at the Garden took place at Madison Square Garden on the 24th of January 2025. It continued the story of The Unsleeping City campaign. The event was expected to be the largest actual play show in the United States.
On the 1st of June 2025, a live event called Battle at the Bowl took place at the Hollywood Bowl in Los Angeles. It was billed as a canonical story event in which either Fabian Seacaster or Chungledown Bim would die. Dropout released it on the 12th of November 2025.
In January 2025, Dropout announced that the original Fantasy High campaign would be adapted as a webcomic for Webtoon. The series launched on the 31st of March 2025 and ran for 58 issues, each referred to as an episode. An adaptation of Fantasy High: Sophomore Year is scheduled to follow.
In July 2025, the Game Changer episode 'Fool's Gold' included a satirical segment called Dimension 20: On a Bus! Katie Marovitch ran the game for Mulligan alongside Jasmine Bhullar, Aabria Iyengar, and Matthew Mercer. Dropout released a follow-up titled Dimension 20 On a Bus: Season 2 for April Fools' Day in 2026.
A 2024 auction of Fantasy High miniatures donated one hundred percent of its profits to the Palestine Children's Relief Fund. It was the first auction to include scenery pieces and sections of the Dungeon Master's screen.
Glen Weldon, writing for NPR in 2021, called Mulligan 'such a close and responsive listener' that, no matter what players attempt, he can adapt without breaking the game. 'And that is a very rare skill,' Weldon wrote. He contrasted Dimension 20 with Critical Role, noting that the cast are 'sketch and improv comedians' rather than actors. At Dimension 20, Weldon observed, if the cast can go for a joke, they will go for the joke.
Moises Taveras, writing for Paste in 2023, pointed to dice rolls as what most set the show apart from television. He wrote that "there's nary a moment, whether it be a rousing victory or an utter defeat, that doesn't propel these characters forward in some way and carve out a unique, player-driven story." Because the action is improvised rather than scripted, Taveras argued, the characters feel like authentic people.
Lauren Coates, writing for Polygon in 2023, highlighted the anthology format as the show's chief flexibility. Across different genres, styles, and tones, the show remains consistent in its comedic, narrative, and emotional delivery. Coates wrote that "it isn't just Dimension 20's sense of humor that makes it so beloved; it's the consistently heartfelt, poignant storytelling."
Christopher Cruz, writing for Rolling Stone in 2024, pointed to pop-cultural spins on fantasy frameworks as a key distinction. Cruz highlighted the show's "strong focus on diverse voices and socially relevant themes woven into the framework."
Academic Emma French examined The Unsleeping City in a scholarly essay. In Mulligan's fictional New York City, the city's magic is powered by the diversity of its residents. Their chronic lack of sleep generates a surplus of dream energy. French argued that the villains the heroes face are always tied back to "a particular kind of status quo." They embody established conditions of American social life rather than threats arriving from outside the world. She described the show's narrative pattern as 'hopepunk.' The cast's performances of compassion and resistance, shaped by Mulligan's authorial choices, push stories toward hopeful conclusions.
By 2025, Dungeons and Drag Queens had been recognized with a Queerty Award for Best Web Series.
Common questions
What is Dimension 20?
Dimension 20 is an actual play tabletop role-playing show on Dropout in which real players perform campaigns on camera. It is an anthology series, with the setting and cast changing between seasons. Most campaigns use Dungeons and Dragons 5th edition.
Who created Dimension 20 and who is the dungeon master?
Dimension 20 was created by Brennan Lee Mulligan, who serves as the show's regular Dungeon Master. Mulligan has been playing Dungeons and Dragons since age 10 and worked as a live-action role-playing game writer before the show launched. Guest Game Masters, most notably Aabria Iyengar, lead Side Quest campaigns.
When did Dimension 20 first premiere?
Dimension 20 premiered in 2018 on Dropout with its first season, Fantasy High. The launch coincided with what Mulligan described as a renaissance of actual play programming.
What streaming service is Dimension 20 on?
Dimension 20 airs on Dropout, a streaming service launched by CollegeHumor in 2018. The parent company later rebranded entirely as Dropout and built much of its programming around the show.
How many Intrepid Heroes seasons of Dimension 20 have aired?
As of 2025, nine Intrepid Heroes seasons of Dimension 20 have aired, including three Fantasy High campaigns, two Unsleeping City campaigns, A Crown of Candy, A Starstruck Odyssey, Neverafter, and Cloudward, Ho! Main campaigns run between seventeen and twenty episodes each and are interspersed with shorter Side Quest campaigns featuring rotating guest casts.
What was the Dimension 20 Gauntlet at the Garden event at Madison Square Garden?
Gauntlet at the Garden was a live Dimension 20 performance at Madison Square Garden on the 24th of January 2025, continuing the story of The Unsleeping City campaign. The event was expected to be the largest actual play show in the United States. A Ticketmaster surge pricing algorithm briefly sent ticket prices into the thousands of dollars, prompting Dimension 20 to opt out of dynamic pricing for all future events.
All sources
71 references cited across the entry
- 1CollegeHumor Launches Brand New Comedy Subscription Service, DropoutSeptember 26, 2018
- 2Interview: CollegeHumor's Dimension 20: Fantasy HighGavin Sheehan — December 17, 2018
- 5Dimension 20: All Intrepid Hero Campaigns, RankedBec Heim — 2023-01-02
- 6Dimension 20's Fantasy High cast will return for Junior Year this winterCharlie Hall — 2023-09-26
- 7IAC Explores Sale of College Humor Parent CH Media28 October 2019
- 8How Dimension 20 Restored My Appetite For TelevisionMoises Taveras — May 26, 2023
- 9Almost everyone at CollegeHumor is fired as new owner asks the internet for helpBijan Stephen — January 8, 2020
- 10Dropout ReviewJuly 28, 2022
- 11Dimension 20 Update: A Safe Return to the DomeMay 24, 2021
- 14D&D: Dimension 20 Auctions Crown Of Candy Minis Next WeekJ. R. Zambrano — 16 July 2022
- 15Dimension 20: Fantasy High Minis AuctionFebruary 26, 2024
- 16What Does the SAG-AFTRA Strike Mean for Actual Play Shows?July 15, 2023
- 17Dropout production is right now on hold. Because we aren't associated with the AMPTP, it's possible we may be able to reach an interim agreement with SAG that allows us to continue to produce content during the strike. THREADSam Reich — July 15, 2023
- 18Dropout is back in production. 🫡 Details below. 👇 ThreadSam Reich — August 8, 2023
- 19Streaming Platform Dropout Is Resuming ProductionJustin Carter — August 8, 2023
- 20Dimension 20's Fantasy High is polymorphing into a webtoon seriesSusana Polo — 2025-01-29
- 21Dropout's 'Dimension 20' Sets 'Fantasy High' Webcomic at WebtoonJennifer Maas — 2025-01-29
- 22'Dimension 20' fans, here's your exclusive first look at the 'Fantasy High' webcomicBelen Edwards — March 26, 2025
- 23Fantasy HighFebruary 24, 2026
- 24'Game Changer' smartly weaponizes its social media following in 'Fool's Gold'Belen Edwards — July 14, 2025
- 26'Dimension 20: On a Bus' Dragon Master Katie Marovitch on how to win at D&DKristy Puchko — April 1, 2026
- 28Dimension 20: All Intrepid Heroes Campaigns, RankedHelen Ashcroft — 2024-03-06
- 29✨Dimension 20: Misfits and Magic✨ Game Master: Aabria Iyengar (@quiddie) Cast: -Lou Wilson -Erika Ishii (@erikaishii) -Danielle Radford (@danielleradford) -Brennan Lee Mulligan (@BrennanLM) A 4 episode event launching June 30th on @dropout. FAQ here: https://t.co/Oj38aL2DgF https://t.co/MS5HB8aSvfDimension 20 🎲 — June 16, 2021
- 31Fantasy High LIVE in Brooklyn24 June 2019
- 32Dimension 20: Fantasy High! Live! at The Bell HousedoNYC — June 24, 2019
- 33Dimension 20 LIVE returns this Friday at #RTX in Austin! Get ready for a new adventure in the world of Fantasy High with @eaxford, @chmurph, @vornietom, @ZacOyama, @agbeardsley and special guest @griffinmcelroy as FICUS!! https://t.co/XiS35QdM9MBrennan Lee Mulligan — July 2, 2019
- 34The live Fantasy High one-shot from @RTXEvent is now live on @dropout! The Bad Kids visit the adventuring college of Astral Sea University! Check it out! https://t.co/VTbwp0E9tEDimension 20 🎲 — September 29, 2020
- 35The VOD of Fantasy High: Boys' Night will be available on https://t.co/YSmV3KNPwM shortly! We'll update you when it's on the platform!Dimension 20 🎲 — October 24, 2020
- 36❄️Wanna know what Dimension 20 is bringing you this winter? 🗓️Well, we have some good news...🧛✨🪐 🤔FAQ here: https://t.co/4cGyklhRk6 #Dimension20 https://t.co/zr9wIhLwLMDimension 20 🎲 — November 3, 2021
- 38Dimension 20's raucous live shows come to Dropout next monthSusana Polo — 2024-08-29
- 39Dimension 20: Live in London – Time Quangle Review24 April 2024
- 40Dimension 20 Announces First Live ShowsChristian Hoffer — August 28, 2023
- 41Dimension 20 Live: Quangle QuestJuly 20, 2025
- 42Dimension 20 Tickets are Selling for More Than Taylor Swift TicketsTara McCauley — 11 April 2024
- 43MagazineLive Performances of Dungeons & Dragons Are Filling Stadiums and Going MainstreamCourtney Mifsud Intreglia — 2024-09-18
- 44Dimension 20 to Host Show at Madison Square Garden in 2025Christian Hoffer — April 8, 2024
- 45Dimension 20 Addresses Ticketing Situation After Madison Square Garden Sells Like the Eras TourJ. R. Zambrano — 15 April 2024
- 47Dimension 20 Live: Battle at the Bowl TrailerNovember 5, 2025
- 48VideoThe Making of Fantasy HighDimension 20 — December 27, 2018
- 49It was a dome until Fantasy High: Sophomore Year. Then we switched to these curved walls.Michael Schaubach — January 15, 2022
- 50How 'Dimension 20' Brings Tabletop RPGs to Life — and Zombie Bear DeathSarah Shachat — December 21, 2023
- 51Making Magic on the Set of Dimension 20: NeverafterGraham Sheldon — November 30, 2022
- 52How the first decade of actual play has defined the templateEm Friedman — 14 September 2022
- 53The lore keeper for "Dimension 20" explains what she does and why AI could never replace her jobCheryl Teh — June 30, 2026
- 54Dimension 20 Is The Perfect Introduction To Dungeons & DragonsHelen Ashcroft — 2024-01-26
- 55Dimension 20 Beginners Guide: Where To Start & What You Need To KnowBrandon Zachary — 2024-06-27
- 56Dimension 20 Announces New Season, Featuring Homebrewed Version of Kids on BikesChristian Hoffer — 2024-06-08
- 57Finally, Dimension 20 fans can Never Stop Blowing Up at their own home tablesSusana Polo — 2024-11-14
- 58Press releaseDimension 20: City Council of Darkness FAQDimension 20 — March 25, 2026
- 59Dimension 20 returns with a Vampire: The Masquerade game and a small-town bloody vibeCorey Plante — March 25, 2026
- 60Dropout's Newest Trailer for Dimension 20 City Council of Darkness Embraces Some New KindredTyler Chancey — March 25, 2026
- 61Dimension 20 Is Finally Doing A Vampire: The Masquerade CampaignJen Lennon — March 29, 2026
- 63Dimension 20 documentary sweats the small stuff, focusing on master of miniatures Rick PerryCharlie Hall — 2023-12-20
- 65NewsWhat's making us happy: A guide for your weekend watching, listening and readingGlen Weldon et al. — 2021-10-08
- 66Dimension 20 broke all the actual play rules to become the best D&D show aroundLauren Coates — September 22, 2023
- 67MagazineStreaming Is Introducing a New Generation to Dungeons & DragonsChristopher Cruz — 2024-01-22
- 68BookUtopia on the TabletopEmma French — Ping Press — 2024
- 71Web Series award winners in the 2025 QueertiesApril 5, 2025
- 72By playing every heel in a wrestling tournament, Brennan Lee Mulligan has reached peak Dungeon MasterSusana Polo — April 5, 2025
- 73Gayming Awards 2026 Celebrates Queer Games, Community, and Gayming Icon Darion LowensteinAnnabelle Cook — June 10, 2026