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On July 7, 2015 Adventure Time was renewed for an eighth season according to The Hollywood Reporter.[1] Storyline writing for season eight began on August 10, 2015.[2] On September 8, 2015, storyboarding began according to Sam Alden.[3] During the season, the miniseries Islands aired at the end of January and the beginning of February 2017.[4] It was first hinted before Stakes aired, when head story writer Kent Osborne revealed that the show would likely produce several more miniseries.[5]

After the reshuffling of the previous season,[6] March 26, 2016, when the episode "Broke His Crown" first aired, marks the premiere of season 8.[7] The season ended with the episode "The Light Cloud" as the season finale;[8] which is also the last episode of the miniseries Islands.

No. overall No. in season Title card Title Viewers
(in millions)
Prod. code Airdate
226 1 S7e27 titlecard "Broke His Crown" 1.13 1034-234 March 26, 2016
When Ice King's magic crown goes haywire, Marceline and Princess Bubblegum resort to extreme measures to help him.
227 2 S7e28 titlecard "Don't Look" 1.13 1034-230 April 2, 2016
Finn unearths a treasure with a terrible price at the top of Dead Mountain.
228 3 S7e29 titlecard "Beyond the Grotto" 1.06 1034-235 April 9, 2016
Finn and Jake follow their Sea Lard into the pond in front of their home, and in doing so, are led to a strange new world.
229 4 S7e30 titlecard "Lady Rainicorn of the Crystal Dimension" 0.90 1034-232 April 16, 2016
Jake's son finds a hidden box and draws attention from a Rainicorn.
230 5 S7e31 titlecard "I Am a Sword" 0.91 1034-236 April 23, 2016
Finn starts having guilt nightmares about his missing Finn Sword...but are the nightmares real?
231 6 S7e32 titlecard "Bun Bun" 1.01 1034-240 May 5, 2016
Finn brings a special delivery for Cinnamon Bun to the Fire Kingdom, but it may come with a dangerous cost.
232 7 S7e33 titlecard "Normal Man" 1.38 1034-241 May 12, 2016
Normal Man asks for Finn and Jake's help to rescue his brother.
233 8 S7e34 titlecard "Elemental" 1.17 1034-242 May 19, 2016
Ice King digs up an item buried underneath the Ice Kingdom.
234 9 S7e35 titlecard "Five Short Tables" 1.36 1034-237 May 26, 2016
Fionna and Cake go on a cooking adventure to take Cake's art to a new level.
235 10 Titlecard S7E36 musichole "The Music Hole" 1.15[9] 1034-239 June 23, 2016
Finn hears a mysterious song while judging a Battle of the Bands.
236 11 Daddy Daughter Card Wars Title Card "Daddy-Daughter Card Wars" 1.16[10] 1034-238 July 7, 2016
Jake needs his daughter's help in an underground Card Wars tourney to move on from his embarrassing past.
237 12 S7e38 titlecard "Preboot" 0.77[11] 1042-243 November 19, 2016[12]
During an excavation of human artifacts, Finn, Jake, and Susan are greeted by a mysterious new stranger who may hold the key to the past.[12]
238 13 Reboot Title Card "Reboot" 0.77[11] 1042-244 November 19, 2016[12]
Finn and Jake take on one of the fiercest enemies they've faced when a powerful ally goes rogue.[12]
239 14 Titlecard S8E1 twoswords "Two Swords" 0.88[13] 1042-248 January 23, 2017[14]
Finn and Jake contend with a mysterious, but familiar, new being.[14]
240 15 Titlecard S8E2 donoharm "Do No Harm" 0.88[13] 1042-249 January 23, 2017[14]
Finn makes amends at the Candy Hospital while Jake tries to connect with their unexpected houseguest.[14]
241 16 Titlecard S8E3 wheels "Wheels" 0.91[15] 1042-245 January 24, 2017[14]
Kim Kil Whan is worried about his daughter’s future and asks Jake for some parental advice.[14]
242 17 Titlecard S8E4 highstrangeness "High Strangeness" 0.95[16] 1042-246 January 25, 2017[14]
An otherworldly encounter puts Tree Trunks on the trail of a conspiracy in the Candy Kingdom. [14]
243 18 S8e5 title card "Horse and Ball" 0.76[17] 1042-247 January 26, 2017[14]
When disaster befalls James Baxter, it’s up to Finn and Jake to help him pick up the pieces.[14]
244 19 Titlecard S8E6 jellybeanshavepower "Jelly Beans Have Power" 0.91[18] 1042-250 January 27, 2017[14]
Princess Bubblegum’s scientific mind must wrestle with her Elemental magic potential when she and her kingdom are faced with a Crystal Entity.[14]
245 20 The InvitationCardHD "The Invitation" 1.20[19] 1042-251 January 30, 2017[14]
A mysterious craft invades Ooo and Finn believes it may hold the secrets to his past.[14]
246 21 Titlecard S8E8 whipplethehappydragon "Whipple the Happy Dragon" 1.20[19] 1042-252 January 30, 2017[14]
Finn, Jake, and Susan set sail on a ocean voyage full of wonders and danger.[14]
247 22 Titlecard S8E9 mysteriousisland "Mysterious Island" 1.09[20] 1042-253 January 31, 2017[14]
After waking up alone and shipwrecked, Finn investigates a bizarre island in search of his friends.[14]
248 23 Titlecard S8E10 imaginaryresources "Imaginary Resources" 1.09[20] 1042-254 January 31, 2017[14]
Finn and Jake travel to a land where reality has been redesigned and improved.[14]
249 24 Titlecard S8E11 hideandseek "Hide and Seek" 1.01[21] 1042-255 February 1, 2017[14]
While exploring some futuristic ruins, Susan sees glimpses of a familiar girl.[14]
250 25 Titlecard S8E12 minandmarty "Min and Marty" 1.01[21] 1042-256 February 1, 2017[14]
An unexpected revelation from Susan leads Finn closer to answers about his past.[14]
251 26 Titlecard S8E13 helpers "Helpers" 1.00[22] 1042-257 February 2, 2017[14]
Finn and his friends journey to a last refuge called Founders Island.[14]
252 27 Titlecard S8E14 thelightcloud "The Light Cloud" 1.00[22] 1042-258 February 2, 2017[14]
Finn confronts the power behind Founders Island, but will he ever return home to Ooo?[14]

Frog Seasons: 2016

Main article: Adventure Time Short: Frog Seasons
Title card Title Viewers
(in millions)
Prod. code Airdate
FSe1 title card Frog Seasons: Spring TBA 1034-229A April 2, 2016
Finn and Jake stalk a frog to see what happens when it puts on its crown.
FSe3 titlecard "Frog Seasons: Summer" TBA 1034-229B April 9, 2016
Finn and Jake stalk a frog to see what happens when it puts on its crown.
FS e3 titlecard "Frog Seasons: Autumn" TBA 1034-229C April 16, 2016
Finn and Jake stalk a frog to see what happens when it puts on its crown.
FS e4 titlecard "Frog Seasons: Winter" TBA 1034-229D April 23, 2016
Finn and Jake stalk a frog to see what happens when it puts on its crown.
FS E5 titlecard "Frog Seasons: Spring (Again)" TBA 1034-229E September 2, 2016
Finn and Jake follow a frog carrying a crown across the four seasons.

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