Title: List of Adventure Time episodes
Content: Air date and season clarifications Directors Explanatory notes   
Title: List of Adventure Time episodes
Content:  (202021) and Adventure Time: Fionna and Cake. Each Adventure Time episode is about eleven minutes in length; pairs of episodes are often telecast in order to fill a half-hour program time slot. For the first five seasons, the show aired on Monday nights. However, starting with the early sixth-season episode "Breezy", the show began to shift both its timeslot and its day of airing. Upon its debut, Adventure Time was a ratings success for Cartoon Network, with its highest-rated episodes scoring over 3 million viewers. The show received positive reviews from critics and has developed a strong following among teenagers and adults, many of whom are attracted due to the series' animation, stories, and characters. Adventure Time has won three Annie Awards, eight Primetime 
Title: Adventure Time (season 1)
Content:  The episodes "Business Time" and "Evicted!" each were "previewed" on Cartoon Network before the official series launch date, on March 11 and 18, respectively. The series officially premiered on April 5, 2010. It debuted with the episodes "Slumber Party Panic" and "Trouble in Lumpy Space". The episode was watched by 2.5 million viewers. The episode was a ratings smash; according to a press release sent out by Cartoon Network, the episode's timeslot saw triple digit percentage increases from the time period of the previous year. For instance, the entry was viewed by 1.661 million kids aged 2–11, which marked a 110 percent increase from the previous year. Furthermore, it was watched by 837,000 kids aged 9–14, which saw a 239 percent increase. This also made it the most-watched episode of the first season. The season finale, "Gut Grinder", was watched by 1.77 million viewers. Originally, the first ten episodes were bundled into 30-minute airings. This means two of the eleven-minute segments were combined into one. Starting with the eleventh episode, "Wizard", the episodes dropped to only one, eleven-minute segment. The first season aired on Mondays at 8:00 pm.
Title: Adventure Time (season 4)
Content:  The season debuted on April 2, 2012, with the episode "Hot to the Touch". The episode was watched by 2.655 million viewers. This marked a slight decrease from the third-season premiere, which had been viewed by 2.686 million viewers. The episode was number one among kids aged 2–11, 6–11, and 9–14, as well as boys aged 2–11, 6–11 and 9–14. The season's sixteenth episode, "Burning Low" was seen by 3.504 million viewers, making it the most-watched episode of the series to air. The twenty-third episode of the season, "The Hard Easy", was the 100th episode produced of the entire show, although it was the 101st aired. It aired on October 1, 2012. The season finale, "The Lich", aired on October 22, 2012, and was viewed by 2.589. It ranked as the number one television episode in its timeslot among all kids aged 2–11, 6–11, and 9–14, and all boy demographics. This season moved to Mondays at 7:30 pm. The first three seasons aired on Mondays at 8:00 pm.
Title: Adventure Time
Content:  season. The show's seventh season was originally intended to comprise 39 episodes, ranging from "Bonnie & Neddy" to "Reboot". However, when it came time to upload the seventh season onto streaming sites like CartoonNetwork.com, Cartoon Network chose to end the season with the episode "The Thin Yellow Line", for a total of 26 episodes. This new episode count for the season was cemented by the release of the complete seventh season DVD on July 18, 2017, which included episodes "Bonnie & Neddy" through "The Thin Yellow Line". As such, the episode and season number sequence is accordingly changed, as follows: For its first six seasons, episodes regularly aired once a week. Starting in November 2014, the show began to air 
Title: Adventure Time (season 2)
Content:  9, 2011. It was viewed by 1.975 million viewers, which marked an increase from the first-season finale. The season was initially supposed to end with the cliffhanger two-parter "Mortal Folly"/"Mortal Recoil." Still, due to a scheduling error, "Heat Signature" was the last episode to air for the season. In 2011, Adventure Time was nominated for an Annie Award, and the episode "It Came from the Nightosphere" was nominated for a Primetime Emmy Award for Outstanding Short-format Animated Program. The series nor the episode won, however. Several compilation DVDs that contained episodes from the season were released after the season finished airing. The complete season set was released on June 4, 2013, on DVD and Blu-ray.
Title: Adventure Time (season 5)
Content:  The season debuted on November 12, 2012, with the two-part episode "Finn the Human"/"Jake the Dog". Together, both episodes were watched by 3.435 million viewers. This marked a drastic increase of almost one million viewers when compared to the previous season premiere, as well as the previous season finale. The season opener was also the most-watched episode of the season. Aside from the season opener, "Jake the Dad", "Bad Little Boy", and "Frost & Fire" were the only other episodes of the season to garner over 3 million viewers, and they were watched by 3.19, 3.077, and 3.009 million viewers, respectively. On March 29, 2013, it was reported that the show averaged roughly 2 to 3 million viewers per episode. The season concluded with "Billy's Bucket List" on March 17, 2014. The episode was viewed by 2.335 million viewers, marking a slight decrease in viewers when compared to the season four finale "The Lich" which was viewed by 2.589 million viewers.
Title: Adventure Time (season 5)
Content:  On October 12, 2012, it was announced that Cartoon Network had officially renewed Adventure Time for a fifth season. The episode titles were released on November 2, 2012 by Frederator Studios, while the show had just reached the end of its fourth season. Based on production numbers, "Finn the Human" was the first episode that underwent production, and it was also the first episode aired. The season contains 52 episodes, twice the normal number of episodes per season. Both Frederator and storyboard artist Jesse Moynihan explained that originally, a four-part special was supposed to divide the season in half, but that the special was pushed off, and later cancelled. However, some elements 
Title: Adventure Time
Content:  Each Adventure Time episode is about eleven minutes in length; pairs of episodes are often telecast in order to fill a half-hour program time slot. Before the official debut of the first season, Cartoon Network aired both "Business Time" and "Evicted!" on March 11 and 18, respectively, advertising these showings as "previews" of the series-to-come. The show officially debuted with "Slumber Party Panic" on April 5, 2010. During the latter part of its run, the show began to experiment with the miniseries format. The first of these was Stakes (2015), which aired during the show's seventh season. The following miniseries, Islands (2017) aired as part of the eight season. The third and final miniseries, Elements (2017), aired during the show's 
Title: Adventure Time
Content:  episodes via "bombs", or weeks in which new episodes debuted every day. This change in airing style disrupted the viewing patterns of some fans, as Dave Trumbore of Collider explained: "Back when [the show] was regularly airing in a more traditional schedule, it was a little easier to keep track of the completely insane episodes full of half-explained mythology and lots and lots of non-sequiturs. During the last few seasons, however, [when] the episodes started to arrive in more of a scattershot fashion scheduled around multi-part specials [it became easier to miss] the random airings of certain episodes". The series' initial run concluded in 2018, after the airing of its tenth season. Reruns have aired on Boomerang and Adult Swim.

Question: how many episodes in adventure time season 1?
Answer: 26.