Season 0 of Dimension 20 premiered on July 10, 2018.

Season 1 of Dimension 20 premiered on September 19, 2018.

Welcome to the land of dragons, wizards - and guidance counselors? Game Master Brennan Lee Mulligan presents CollegeHumor's very first RPG with an '80s twist.

Season 2 of Dimension 20 premiered on April 30, 2019.

Game Master Brennan Lee Mulligan returns to Dimension 20 for an evil side quest, and this time, the villains are the heroes. Featuring an all-new cast full of familiar faces, Escape From The Bloodkeep proves that being bad can be very, very good.

Season 3 of Dimension 20 premiered on July 9, 2019.

Dimension 20 returns with a new epic adventure set in New York City, city of dreams, talking rats, and pixie mobsters.

Season 4 of Dimension 20 premiered on January 9, 2020.

The newest Dimension 20 side-quest takes you to a new world, filled with big crimes & small people.

Season 5 of Dimension 20 premiered on April 8, 2020.

Welcome to the realm of Calorum - a realm made of six food-themed lands. But this tale of sorrow and sweetness is that of the candy kingdom of Candia...

Season 6 of Dimension 20 premiered on September 16, 2020.

It's a pirate's life for everyone in this RPG sidequest! Follow along as a group of buccaneer buddies cause all kinds of mayhem in the name of saving the floating city of Leviathan!

Season 7 of Dimension 20 premiered on October 16, 2019.

The story sees the Bad Kids, a group of adventurers from the Aguefort Adventuring Academy, in their sophomore year working to complete their school assignment of retrieving the Crown of the Nightmare King.

Season 8 of Dimension 20 premiered on November 11, 2020.

In this sequel campaign to The Unsleeping City, the champions of New York are called upon once again to defend both the waking world and the borough of dreams from the greatest danger of all - unfettered capitalism.

Season 9 of Dimension 20 premiered on April 7, 2021.

This Dimension 20 Side Quest follows a selection of critters who find themselves involved in solving a murder that occurs during a party they're attending.

Season 10 of Dimension 20 premiered on June 30, 2021.

Misfits and Magic takes place in a world not unlike our own - with the exception that there’s a secret underground society of wizards operating unbeknownst to the non-magic world. And a prominent British wizarding school is about to recruit 4 unlikely American teens to be ushered into their world - a decision they may soon regret.

Season 11 of Dimension 20 premiered on August 18, 2021.

A story of the seven high schoolers once taken prisoner by the villains of Fantasy High: Freshman Year, but now a full-fledged adventuring party unto themselves. These heroic high schoolers are facing the greatest threat they've ever encountered...graduation. Also, the end of the world.

Season 12 of Dimension 20 premiered on November 10, 2021.

Four monstrous students at Bram University face off against hormones, mysteries, and the most epic party in monster history.

Season 13 of Dimension 20 premiered on January 12, 2022.

It's a tough galaxy out there, but somebody's gotta live in it...it might as well be you.

Season 14 of Dimension 20 premiered on June 8, 2022.

GM Jasmine Bhullar weaves a tale as old as many lifetimes, in the gloomy land of Transylvania

Season 15 of Dimension 20 premiered on August 3, 2022.

GM Aabria Iyengar and her pack of pixies prepare for the most magical event of the season.

Season 16 of Dimension 20 premiered on November 30, 2022.

In the world of the Neverafter, not all fairy tales have happy endings.

Season 17 of Dimension 20 premiered on May 10, 2023.

In an age before A Crown of Candy, the seeds of conflict began to take root - and soon, all of Calorum was enveloped in The Ravening War.

Season 18 of Dimension 20 premiered on June 28, 2023.

Four drag queen adventurers death drop into the underworld.

Season 19 of Dimension 20 premiered on August 9, 2023.

Welcome to Mentopolis - the city that exists only in your mind.

Season 20 of Dimension 20 premiered on October 4, 2023.

A family of stoats must sacrifice everything to survive in a harsh, cruel world.

Season 21 of Dimension 20 premiered on January 10, 2024.

The Bad Kids return for a new year at the Aguefort Adventuring Academy - filled with new challenges, new enemies, and new allies.