Dimension 20
Dimension 20 emerged in 2018 as a flagship production for Dropout, the streaming service launched by CollegeHumor to deliver R-rated content and unusual formats. The show debuted with its first season, Fantasy High, on the 26th of September 2018, featuring Brennan Lee Mulligan as the Dungeon Master. Mulligan had been running tabletop games since age ten and previously DMed a private campaign with most of the principal cast before Lou Wilson and Ally Beardsley joined. The series launch coincided with financial instability at CollegeHumor, which had pivoted to Facebook video based on flawed metrics in the late 2010s. By late 2019, owner InterActiveCorp was exploring selling the company. In January 2020, the Dimension 20 cast was laid off alongside broader layoffs at CollegeHumor, leaving Mulligan as the sole creative staff member on payroll. Despite this, production continued remotely as California implemented stay-at-home orders during the COVID-19 pandemic. The show survived because Dropout rebranded from CollegeHumor and began heavily focusing on Dimension 20 as its core content pillar. On the 24th of May 2021, Mulligan announced that production would resume in-person and in-studio following SAG-AFTRA safety guidelines. By 2024, the company had hired more staff beyond its initial skeleton crew and achieved a positive financial situation. Beginning in 2022, Dropout auctioned miniatures from previous seasons to fund future campaigns and support charitable causes like the Palestine Children's Relief Fund.
The seasons of Dimension 20 are broadly divided into Intrepid Heroes campaigns featuring six recurring players and Side Quests with rotating guest casts. Intrepid Heroes campaigns typically run between seventeen and twenty episodes, while Side Quests contain eleven or fewer episodes. As of 2025, nine Intrepid Heroes seasons have aired including Fantasy High, The Unsleeping City, A Crown of Candy, and Cloudward, Ho!. Brennan Lee Mulligan serves as Dungeon Master for all main campaigns, though he has occasionally stepped aside for guest Game Masters. Emily Axford, Ally Beardsley, Brian Murphy, Zac Oyama, Siobhan Thompson, and Lou Wilson form the core Intrepid Heroes cast. Aabria Iyengar is the most frequent guest Game Master, appearing four times across different Side Quests. Guest players often come from CollegeHumor alumni or other actual play shows, but exceptions exist such as Dungeons and Drag Queens which featured RuPaul's Drag Race contestants. In 2024, a Time Quangle live tour in the UK and Ireland acted as a crossover event where performers drew randomly from past campaigns using bingo machines to determine characters and settings. These performances were recorded and released on Dropout throughout late 2024 as a non-canonical series.
Most Dimension 20 campaigns utilize Dungeons & Dragons 5th edition rules, though Brennan Lee Mulligan creates house rules altering the system for specific seasons. Several campaigns employ entirely different role-playing game systems such as Kids on Bikes or Star Wars 5e. The 22nd campaign introduced Never Stop Blowing Up, a homebrewed system based on Kids on Bikes designed primarily for filmed actual play with less focus on balance. Dropout released this system free on their website in November 2024. Producer Carlos Luna admitted they are not professional game designers stating the system might not last beyond one session but would be fun to play. The Never Stop Making Magic system further customized Never Stop Blowing Up for Misfits and Magic season two by mixing it with Kids on Brooms and Dropout's Never Stop System. Some campaigns use modified versions of existing systems while others create entirely new frameworks tailored to unique settings. Fantasy High: Sophomore Year used theater of the mind instead of physical miniatures or sets. A Crown of Candy employed digital tabletop system TaleSpire for encounters and battles. The Unsleeping City Chapter II utilized virtual tabletop Roll20 replacing physical dice and figurines
during remote recording.
The show has produced twenty-seven distinct campaigns spanning from 2018 through early 2026 with varying lengths and themes. Fantasy High premiered the 26th of September 2018 set in Elmville where Bad Kids attend Aguefort Adventuring Academy teaching students to become adventurers. The Unsleeping City debuted the 9th of July 2019 featuring New Yorkers protecting residents from underlying magic in a magical version of modern-day NYC. A Starstruck Odyssey began the 3rd of August 2022 following a ragtag spaceship crew saving the galaxy using Star Wars 5e rules. Neverafter launched the 30th of November 2022 as horror-themed campaign featuring twisted fairy tale characters corrupted by dark forces. Dungeons and Drag Queens aired the 28th of June 2023 starring RuPaul's Drag Race stars descending into the underworld. Misfits and Magic started the 10th of January 2024 continuing the story three years later when pilot program members reunite investigating disappearance of magic. Cloudward Ho! premiered the 4th of June 2025 depicting Windrider Society searching for lost continent in steampunk setting. Each campaign features unique settings ranging from candy-inspired kingdoms to Regency era Fae Courts and post-apocalyptic Mad Max inspired worlds. Recurring cast members include Erika Ishii, Matthew
Mercer, Ify Nwadiwe, Rekha Shankar, Mike Trapp, Lily Du, Griffin McElroy, Carlos Luna, Danielle Radford, Isabella Roland, Becca Scott, Oscar Montoya, Alaska Thunderfuck, Bob the Drag Queen, Jujubee, Monét X Change, Alex Song-Xia, and Jacob Wysocki.
Dropout has released multiple one-shot adventures extending Fantasy High campaigns including Dimension 20: Fantasy High! Live! at The Bell House with Brian David Gilbert and Fantasy High LIVE at RTX Austin featuring Griffin McElroy. A series of six live non-canonical Time Quangle events occurred in Ireland and the United Kingdom during April 2024 where performers rolled dice to determine characters pulling randomly from five past campaigns. These performances were recorded and released as a six-episode non-canonical Time Quangle series in late 2024. A series finale called Quangle Quest took place the 20th of July 2025 at Climate Pledge Arena in Seattle releasing the 10th of December 2025 on Dropout. Performers equipped with Bracers of Quangling selected which characters they wanted to play throughout each show. Gauntlet at the Garden occurred the 24th of January 2025 at Madison Square Garden continuing The Unsleeping City story. Ticketmaster's surge pricing algorithm caused tickets briefly selling for thousands of dollars exceeding Taylor Swift ticket prices before Dimension 20 opted out of dynamic pricing for future events. With fifteen thousand tickets sold within four days, organizers expected it to become largest actual play show in United States. Battle at
the Bowl took place the 1st of June 2025 at Hollywood Bowl in Los Angeles billed as canonical event determining whether Fabian Seacaster or Chungledown Bim would die.
CBR described Dimension 20 among best of its kind highlighting arc-based format keeping stories fast-paced while allowing rotation of new players and voices. Glen Weldon writing for NPR in 2021 praised Mulligan's Dungeon Master skills noting his responsiveness allows him to roll with player actions without breaking game. Moises Taveras for Paste in 2023 highlighted improvisational nature where dice mechanics set show apart from rest of television by propelling characters forward uniquely. Lauren Coates of Polygon in 2023 emphasized anthology format reinventing itself spanning vast variety genres styles tones consistent delivering comedic narrative emotional fronts. Christopher Cruz of Rolling Stone in 2024 noted creative framing pushing diversity storytelling with many campaigns functioning parodies famous fantasy classics. Academic Emma French analyzed The Unsleeping City explaining players explicitly heroes defending New York City literalizing contemporary American social issues through fantasy worldbuilding. Justin Carter reviewing A Starstruck Odyssey for Gizmodo stated consistency shaking things up gives different longevity compared fellow actual play titans. Rowan Zeoli commenting on Dungeons and Drag Queens for Polygon said season embraces LGBTQ community no uncertain terms offering beacon nerdy queer joy during constant attacks on community. The show received Webby Award recognition
for Fantasy High in 2019 and Queerty Award for Best Web Series for Dungeons and Drag Queens in 2025.
Common questions
When did Dimension 20 first air and who created it?
Dimension 20 debuted on the 26th of September 2018 with Brennan Lee Mulligan serving as Dungeon Master. The show emerged in 2018 as a flagship production for Dropout, the streaming service launched by CollegeHumor.
What are the main cast members of Dimension 20 Intrepid Heroes campaigns?
Emily Axford, Ally Beardsley, Brian Murphy, Zac Oyama, Siobhan Thompson, and Lou Wilson form the core Intrepid Heroes cast. Brennan Lee Mulligan serves as Dungeon Master for all main campaigns while occasionally stepping aside for guest Game Masters like Aabria Iyengar.
Which game systems does Dimension 20 use for its campaigns?
Most Dimension 20 campaigns utilize Dungeons & Dragons 5th edition rules though Brennan Lee Mulligan creates house rules altering the system for specific seasons. Several campaigns employ entirely different role-playing game systems such as Kids on Bikes or Star Wars 5e including homebrewed frameworks like Never Stop Blowing Up released free in November 2024.
How many distinct campaigns has Dimension 20 produced through early 2026?
The show has produced twenty-seven distinct campaigns spanning from 2018 through early 2026 with varying lengths and themes. These include Fantasy High which premiered the 26th of September 2018 set in Elmville and The Unsleeping City which debuted the 9th of July 2019 featuring New Yorkers protecting residents from underlying magic.
What live events have Dimension 20 hosted since 2024?
A series of six live non-canonical Time Quangle events occurred in Ireland and the United Kingdom during April 2024 where performers rolled dice to determine characters pulling randomly from five past campaigns. Gauntlet at the Garden occurred the 24th of January 2025 at Madison Square Garden while Battle at the Bowl took place the 1st of June 2025 at Hollywood Bowl in Los Angeles billed as canonical event determining whether Fabian Seacaster or Chungledown Bim would die.