Television Specials

"Mortal Folly & Mortal Recoil"
This is a half-hour season 2 special. It introduces The Lich (character). It aired on May 2, 2011

"Fionna and Cake"
This is the first Fionna and Cake gender-swap episode. It aired on September 5, 2011

"The Creeps"
This is a Halloween episode. It aired on October 17, 2011

"From Bad to Worse"
This is another Halloween episode. It aired on October 24, 2011

"Thank You"
This is a Thanksgiving episode. It aired November 23, 2011

"Holly Jolly Secrets Part I & Holly Jolly Secrets Part II"
This is a half-hour Christmas special. It aired on December 5, 2011

"Incendium"
This is usually considered a Valentine's Day episode, as it aired on February 13, 2012, a day before Valentine's Day; it centers on Jake finding a new love for Finn and Finn meeting Flame Princess for the first time. However it is confirmed that this episode aired around Valentine's Day is just coincidence.It is also the season 3 Final.

"Hot to the Touch"
This is the second part to Incedium. It's considered an April Fool's Day episode; it aired on April 2, 2012, a day after April Fools's Day. It is also the season 4 Premiere.

"Return to the Nightosphere & Daddy's Little Monster
This is a half-hour season 4 special. It aired on April 30, 2012

"The Lich (episode)"
This is a special season 4 Final. It aired on October 22, 2012

"Finn the Human (episode) & Jake the Dog (episode)
This is a half hour season 5 Premiere; it takes place after The Lich. It aired on November 12, 2012

"Bad Little Boy"
This is the second Fionna and Cake gender-swap episode. It aired on February 18, 2013

"A Glitch is a Glitch"
This is an April Fool's day episode. It is the first episode to use a different animation. It aired on April 1, 2013

"Frost & Fire"
This is a special episode that concluded the frost and fire marathon. It aired on August 5, 2013

"Earth & Water"
This is the sequel to the frost and fire episode. It aired on September 2, 2013

"Play Date"
This is part 1 of a special 2 part episode featuring Kee-Oth the blood demon. It aired on November 4, 2013

"The Pit"
This is part 2 of a special 2 part episode Featuring Kee-Oth the blood demon. It aired on November 18, 2013

"Lemonhope Part 1 & Lemonhope Part 2"
This is a half-hour season 5 special. It aired on March 10, 2014

"Billy's Bucket List"
This is a special season 5 Final. It aired on March 17, 2014

"Wake Up & Escape from the Citadel"
This is a half-hour season 6 Premiere; It takes place after billy's bucket list and introduces Martin Mertens. It aired on April 21, 2014

"Food Chain"
This is the second episode to use a different animation. It aired on June 12, 2014

"The Prince Who Wanted Everything"
This is the third Fionna and Cake gender-swap episode. It aired on June 26, 2014

"Water Park Prank"
This is the third episode to use a different animation. It aired on May 21, 2015

"Hot Diggity Doom & The Comet
This is a half-hour season 6 Finale. It aired on June 5, 2015

"Stakes"
This is the first ever 8 part mini series special; it deals with Marceline's vampire past. all aired in one week; two for each day of the week. They aired on November 16, 2015, November 17, 2015, November 18, 2015, and November 19, 2015.

"The More You Moe, The Moe You Know (Part I) & The More You Moe, The Moe You Know (Part II)
This is a half-hour season 7 Christmas special. It aired on December 3, 2015

"Bad Jubies"
This is the forth episode to use a different animation. It aired on January 14, 2016

"Five Short Tables"
This is the forth Fionna and Cake gender-swap episode. It aired on May 26, 2016

"Preboot & Reboot"
This is an upcoming half-hour season 7 special. Set to air in the near future