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- This guide covers all seven seasons of The 100 and is complete.
The 100 Episodes Guide: Every Season Explained, With Counts and Watch Order
Seven seasons and 100 episodes of The 100 aired on The CW between 2014 and 2020. The guide covers the content and length of each season and gives a starting point for viewers short on time.
The 100 episodes, every season explained
The 100 is a science-fiction drama that aired on The CW and takes its starting point from the young adult novels by Kass Morgan. Jason Rothenberg developed the series and ran it. The setup is simple to state: 97 years after a nuclear apocalypse, the survivors live on a space station called the Ark, and a group of juvenile detainees is sent down to the ground to find out whether Earth can be lived on again. That is the whole pitch of season 1, and the first hour of the pilot is built around it. Across seven seasons, the 100 episodes follow that experiment through war, politics and several changes of setting.
The first practical question is how many seasons of the 100 there are, and the answer is seven. They aired between March 2014 and September 2020. Taken together they total 100 episodes. Seasons of 13 and 16 episodes add up to exactly 100. Every season is explained further down, with its own length and air dates, and the table that follows gives the same numbers in one place for anyone who wants them fast.
The dates are easy to pin down. The series premiered on The CW on March 19, 2014, and the last episode aired on September 30, 2020. Jason Rothenberg developed it and wrote the pilot, and the series page on Wikipedia lists no change of showrunner across the seven seasons. He also wrote and directed the final hour, so the run reads as one planned arc even where the tone shifts from season to season.
What makes the show worth a guide is how often it changes shape. Rough Cut Review counts at least five distinct series inside the run: a survival story about teenagers on unfamiliar ground, a war story about two societies that cannot trust each other, a political thriller about who gets to lead, a countdown story with a hard deadline, and a long late-run excursion far from Earth. The cast carries it across those shifts. Eliza Taylor as Clarke and Bob Morley as Bellamy anchor the whole run, with Marie Avgeropoulos, Lindsey Morgan, Paige Turco, Henry Ian Cusick, Christopher Larkin and Richard Harmon among the faces that return season after season.
The shifts also explain why opinions on the show split so sharply. Viewers who loved season 1 and its tight group dynamics sometimes find the later seasons too large; viewers who came for the big mythology tend to rate the middle seasons highest. Rough Cut Review treats none of that as a flaw to hide. The sections below walk through the 100 episodes season by season and say what each one actually does, so a reader can decide how far to go. The longer recap of the first six seasons lives on a separate page, The 100: seasons 1 to 6, recapped, and that page does discuss outcomes. This one does not.
Watch order is the most common question, so it gets its own paragraph. There is no alternate sequence worth following. The 100 is serialized, characters die and change sides, and a skipped episode usually costs a later payoff. Watch the seasons in broadcast order, one through seven. If time is short, the list near the end of this guide marks the episodes that carry the most weight, but treat it as a fallback for catching up, not as a replacement for the show. Anyone planning a full run can use the guide to the 100 episodes below as a map of how long each stretch takes.
Planning matters because the run is long. At the typical hour per episode, the whole series is roughly a hundred hours of television, and the middle seasons are heavier than the early ones. A reader who knows that every season explained here is between 13 and 16 episodes can plan a viewing in blocks of one or two weeks per season, which is how most people finish it without losing the thread.
The 100: every season by the numbers
| Season | Episodes | Premiere | Finale | Showrunner note | Where it goes |
|---|---|---|---|---|---|
| Season 1 | 13 | March 19, 2014 | June 11, 2014 | Rothenberg developed the series and wrote the pilot | Teenagers land on a ground nobody has walked in nearly a century |
| Season 2 | 16 | October 22, 2014 | March 11, 2015 | Rothenberg; season ordered May 8, 2014 | A war with two fronts and a hard question about leadership |
| Season 3 | 16 | January 21, 2016 | May 19, 2016 | Rothenberg; season ordered January 11, 2015 | Politics among the clans, and a threat that is not human |
| Season 4 | 13 | February 1, 2017 | May 24, 2017 | Rothenberg; season ordered March 12, 2016 at 13 episodes | A countdown with a known date and not enough room for everyone |
| Season 5 | 13 | April 24, 2018 | August 7, 2018 | Rothenberg; season ordered March 10, 2017 | A harsher world, a new society and newcomers from above |
| Season 6 | 13 | April 30, 2019 | August 6, 2019 | Rothenberg; season ordered May 9, 2018 | A new star system and a very different kind of danger |
| Season 7 | 16 | May 20, 2020 | September 30, 2020 | Rothenberg; 16 episodes ordered April 24, 2019, final season announced August 2019, finale written and directed by him | The final season, closing the long-running questions |
Episode counts, dates and renewal dates follow the series and season pages on Wikipedia, checked October 2026. Those pages list no showrunner change, so Jason Rothenberg is the showrunner note for every row. The seven seasons add up to 100 episodes.
The 100: seven seasons, 100 episodes
The CW episode listings
The season-by-season guide
The sections below go season by season, noting the premise, the length and the type of story each one tells. Endings are left out of every section. Readers after a fast answer can start with the table above, which lists every season at a glance; the sections that follow give the longer version. Anyone asking how many seasons of the 100 there are can stop at seven and use the sections below to pick where to begin.
One pattern to keep in mind while reading: the show resets its own rules about every two seasons. Each reset brings a new setting, a new antagonist and a slightly different tone, so the opinion a viewer forms of one season rarely carries over to the next. That is the main reason this guide treats each season as its own small story without grading the series as a single block.
Season 1: the ground (13 episodes, 2014)
Anyone searching for the 100 season 1 wants the same thing: a clear picture of whether it is worth the hours before the show opens up. It runs 13 episodes, premiered on March 19, 2014, and finished on June 11 of that year. The Ark is failing, and the council decides to send 100 young detainees to the surface as an experiment. Clarke, Bellamy, Octavia, Finn and Murphy are among them, and the early episodes are about whether a group with no adults can govern itself on a planet that may still be hostile.
The pacing is brisk and the stakes stay personal. Plot lines on the ground alternate with scenes aboard the Ark, where Abby, Jaha and Kane argue over what the people in orbit owe the ones below. Rough Cut Review would call this the most self-contained stretch of the series. The ending sets up the rest of the run without requiring the reader to know anything about it in advance.
For anyone comparing notes on the 100 season 1 against what came later, the useful question is tone. The first season is closer to a survival drama than the war and politics of the seasons after it, and its smaller scale makes it the easiest entry point. It also gives the clearest look at the cast before the show grows past them. Readers who know Kass Morgan's first novel will recognize the outline of the setup, though the show departs from the book in setting and scale, as the section on the novels below explains.
If this season does not hold you, the show only gets bigger from here, so it is a fair place to stop. If it does, the pilot and the two-part "We Are Grounders" episodes mark where the series decides what it wants to be. The titles in between read like a course outline: "Earth Skills," "Earth Kills," "Murphy's Law," "Unity Day," "I Am Become Death" and "The Calm." The season aired weekly from March 19 to June 11, 2014, with no mid-season break, and The CW ordered a second season on May 8, 2014, while the first was still on the air. For anyone sampling the 100 season 1 before committing, thirteen weekly episodes make a manageable test.
Season 2: the mountain (16 episodes, 2014-2015)
Season 2 premiered on October 22, 2014, and ended on March 11, 2015, with 16 episodes. Where the first season was about arrival, the second is about a war. The ground is no longer empty: the people already living there have their own politics, and the Ark survivors have to decide whether to ally with them. A second threat, hidden inside a mountain, gives the season its real shape.
This is where the show finds the habit that defines it, which is forcing its leads into choices that have no clean answer. Clarke and Bellamy are tested separately and together, and the supporting cast gets room to matter. Raven Reyes, played by Lindsey Morgan, becomes one of the series' central figures here.
The run is split by a winter break: "Spacewalker" aired December 17, 2014, and "Remember Me" did not follow until January 21, 2015. The CW ordered season 3 on January 11, 2015, before the second season had finished airing. The closing two-parter is titled "Blood Must Have Blood," and its Part One and Part Two aired on March 4 and March 11, 2015.
Most fans who rank the seasons put this one near the top, and the two-part ending is among the most discussed in the run. No details here, because it is the right place to go in cold.
Season 3: the city (16 episodes, 2016)
Season 3 took a break of ten months after season 2 and returned on January 21, 2016, wrapping on May 19 with 16 episodes. It opens with a two-part premiere titled "Wanheda," and Clarke is at its center. The politics of the clans move to the foreground, the alliances from season 2 come under strain, and a city becomes the stage for much of the season.
A second storyline, about technology, grows in the background and takes over in the back half. It gives the season a split personality: the first half plays as a political drama, and the second half is closer to hard science fiction, and that split is why some viewers rank it lower than seasons 2 and 4 and others rank it highest.
The titles run from "Wanheda: Part One" and "Part Two" through "Ye Who Enter Here," "Watch the Thrones," "Hakeldama," "Bitter Harvest" and "Join or Die" to "Red Sky at Morning" before the two-part finale. A three-week gap separates "Terms and Conditions" on March 10, 2016, from "Stealing Fire" on March 31. Richard Harmon's John Murphy moves from recurring to the main cast here and stays through season 7. The CW ordered season 4 on March 12, 2016, at 13 episodes, three fewer than seasons 2 and 3.
The finale is titled "Perverse Instantiation," in two parts. It is one of the more divisive hours of the series, so go in expecting an argument with your own taste.
Season 4: the deadline (13 episodes, 2017)
Season 4 premiered on February 1, 2017, and ended on May 24 with 13 episodes. It is the tightest of the middle seasons because it works against a clock. A catastrophe that cannot be stopped is on its way, there is only so much shelter, and the season asks who will be protected and who decides.
That structure suits the show. The cast is large by now, so a shared deadline pulls the story lines onto one track. Old alliances are tested again, and the moral compromises start to pile up. The title of the final episode, "Praimfaya," tells you the name of the threat and nothing else.
Season 4 opens with "Echoes" and carries titles such as "Heavy Lies the Crown," "The Four Horsemen," "Gimme Shelter," "God Complex," "Die All, Die Merrily" and "The Chosen." A four-week pause separates "God Complex" on March 29, 2017, from "DNR" on April 26. Season 5 was ordered on March 10, 2017, while this one was still airing. Zach McGowan's Roan is listed as a main cast member for this season only, a sign of how quickly the show turns over its supporting players.
For viewers short on time, season 4 is the easiest of the later seasons to recommend after the first two. It has a clear premise, a clear end point and a lot of consequence per hour.
Season 5: the new order (13 episodes, 2018)
Season 5 premiered on April 24, 2018, and finished on August 7, with 13 episodes. It opens with a time jump, and the first episode is titled "Eden." The world the characters now live in is rougher than anything before it, and the main story is about who they have become after years of survival.
New factions arrive, and the season spends much of its length on how a society organizes itself under pressure. Wonkru, the name the main group goes by here, is the series' most direct treatment of what it costs to keep people alive. Some of the plotting is uneven, and the season is the one most likely to split a viewer's patience.
The episode list runs from "Eden" through "Red Queen," "Sleeping Giants," "Pandora's Box," "Shifting Sands," "Exit Wounds," "Acceptable Losses," "How We Get to Peace," "Sic Semper Tyrannis" and "The Warriors Will" before "The Dark Year" arrives as episode 11. The two-part closer is titled "Damocles," and Part Two aired on August 7, 2018. The CW ordered season 6 on May 9, 2018, early in this season's run. Isaiah Washington and Christopher Larkin are both listed as main cast through season 5 and no further.
It also contains some of the series' strongest standalone episodes, such as "The Dark Year," which fills in what happened during the gap. Read on if you finished season 4; skip nothing.
Season 6: a new sky (13 episodes, 2019)
Season 6 premiered on April 30, 2019, and ended on August 6 with 13 episodes. The setting changes completely: the survivors arrive in a new star system, and the season begins with "Sanctum." Nearly everything the viewer knows about how the world works is reset, and the cast has to learn it again.
The season trades the open war of earlier years for something quieter and stranger, built around a society with its own rules and its own hidden costs. Episodes such as "The Gospel of Josephine" and "Matryoshka" lean into mystery and identity more than combat. Rough Cut Review finds this the most divisive stretch for returning viewers, in part because it feels like starting a different show.
After "Sanctum" the list continues with "Red Sun Rising," "The Children of Gabriel," "The Face Behind the Glass," "Memento Mori," "Nevermind," "The Old Man and the Anomaly," "What You Take With You," "Ashes to Ashes" and "Adjustment Protocol." The CW ordered season 7 on April 24, 2019, six days before this season began, and in August 2019 Rothenberg and The CW's Mark Pedowitz announced that season 7 would be the last. Henry Ian Cusick and Paige Turco are both listed as main cast through season 6, and Shannon Kook is a main cast member in seasons 6 and 7.
The reward is that the season sets up the finale run. Characters who seemed settled get new problems, and the final episode, "The Blood of Sanctum," leaves the story pointed at its last chapter.
Season 7: the last chapter (16 episodes, 2020)
Season 7 is the final season. It premiered on May 20, 2020, and ended on September 30 with 16 episodes, tying seasons 2 and 3 as the longest of the run. It opens with "From the Ashes" and moves through several settings across its length, with episode titles such as "Hesperides," "Welcome to Bardo" and "Etherea" marking the changes in place.
The production history is unusual. The CW renewed the show in April 2019 for 16 episodes, and the season moved to Wednesdays at 8 p.m. Eastern when it premiered on May 20, 2020. Filming of the final episode began in Vancouver on March 4, 2020, as the COVID-19 pandemic was starting, and wrapped on March 15. Nine episodes aired weekly through "The Flock" on July 15, then a gap ran to "A Little Sacrifice" on August 5,. The eighth episode, "Anaconda," has its own section below.
The season is built to close the show's long-running questions, and it carries a lot of ground to cover. That makes it uneven by design: some episodes are set pieces, others are quiet character studies, and a few feel like they were written to tie off threads that had been open for years. The best material is where the series returns to its oldest question, what the survivors owe to each other.
The last hour is titled "The Last War," and Rothenberg wrote and directed it. This guide does not reveal what happens in it and names the finale only by title and date.
From Kass Morgan's novels to the CW series
The show is loosely based on a young adult novel series by Kass Morgan. The first book, The 100, was published on September 3, 2013, by Little, Brown Books for Young Readers, only about six months before the television pilot aired. Three sequels followed: Day 21 on September 25, 2014, Homecoming on February 26, 2015, and Rebellion on December 6, 2016. That makes four novels in total, and by the time the last of them appeared, the television adaptation was already into its third season.
The premise carries over, and the details do not. In the books, the survivors live on a space colony three centuries after a thermonuclear apocalypse, governed by a Chancellor, in a society where nearly every crime is punishable by death. Clarke Griffin is arrested, and 100 teenage prisoners are later sent to Earth to test whether it can be lived on. In the series, the apocalypse lies 97 years in the past and the survivors live on the Ark, a set of merged orbiting stations. Clarke, Wells Jaha and Bellamy Blake are the central characters in the novels, and Clarke and Bellamy remain the emotional center of the show.
Beyond the first stretch, the two stories separate. The television series builds its own world of clans, politics and wars across seven seasons, with a cast the books never had. For anyone weighing the 100 season 1 against the first novel, the useful comparison is the opening setup, not the outcomes. Rough Cut Review treats the show as its own story with a shared starting point. Readers who finish the 100 episodes and want more of the premise can pick up the four novels, though the events will not match the screen.
The Grounder clans and Trigedasleng
The people the teenagers meet on the ground are known as Grounders, and the series presents them as a set of clans. The character pages on Wikipedia count at least twelve in eastern North America, including Trikru (the Tree People, a woods clan and the dominant one), Azgeda (the Ice Nation), Floukru (the Boat People), Trishanakru, Boudalankru, Yujleda, Ouskejonkru, Ingranronakru, Louwoda-Klironkru, Sankru, Podakru and Delfikru. They share a constructed language called Trigedasleng, shortened to "Trig" on the show. Linguist David J. Peterson, who also created Dothraki and Valyrian for Game of Thrones, built it after the producers contacted him following his work on Star-Crossed. It is designed as an evolution of English, which Peterson traced to a cant the early Grounders used to hide their speech and tell friend from foe. Rothenberg has compared it to Creole English.
The main cast and who leaves when
The show's cast list changes more than most. Eliza Taylor (Clarke Griffin), Bob Morley (Bellamy Blake) and Marie Avgeropoulos (Octavia Blake) are billed as main cast and carry no listed end season on Wikipedia. The others come and go. Thomas McDonell (Finn Collins) is main cast in seasons 1 and 2. Eli Goree (Wells Jaha) and Kelly Hu (Callie Cartwig) are listed for season 1 alone. Devon Bostick (Jasper Jordan) runs through season 4. Isaiah Washington (Thelonious Jaha) and Christopher Larkin (Monty Green) run through season 5, with Larkin returning as a guest in season 6.
The middle of the cast is the longest-lived. Henry Ian Cusick (Marcus Kane) and Paige Turco (Abby Griffin) are main cast in seasons 1 through 6, and Turco returns as a guest in season 7. Lindsey Morgan (Raven Reyes) is recurring in season 1 and main cast in seasons 2 through 7. Richard Harmon (John Murphy) is recurring in seasons 1 and 2 and main cast in seasons 3 through 7. Ricky Whittle (Lincoln) is main cast in seasons 2 and 3, Zach McGowan (Roan) in season 4, and Shannon Kook (Jordan Green) in seasons 6 and 7. In season 7, Alaina Huffman joined as Nikki and Chuku Modu was promoted to series regular.
The ranges say who is billed, not how a character's story ends, and this guide leaves that out on purpose. Across the 100 episodes, they are enough to show where a favorite actor drops out of the main cast.
Season 7, "Anaconda" and the prequel that never aired
Season 7 contains an episode that was built to launch a second series. "Anaconda" is the eighth episode of the season and the 92nd overall, and it aired on July 8, 2020. Rothenberg wrote it and Ed Fraiman directed it. It was a backdoor pilot, a regular episode that doubles as a pitch for a spin-off. Rothenberg began developing a prequel for The CW in October 2019, and in February 2020 Iola Evans, Adain Bradley and Leo Howard were reported as cast in the roles of Callie, Reese and August.
The prequel was never picked up. In January 2021, Deadline reported that it was still being considered, and in May 2021 The CW's Mark Pedowitz said the same. In November 2021, The CW decided not to move forward with the series. That leaves "Anaconda" as a one-off hour in the 100 episodes with an unusual function. Watch it in its broadcast position, between "The Queen's Gambit" and "The Flock," and treat the prequel as unrealized.
The failed spin-off also settles a common question. Anyone asking how many seasons of the 100 there are, or whether a follow-up exists, can count seven seasons, 100 episodes and no official follow-up series. Season 7 was announced in August 2019 as the last.
The episodes that matter when time is short
Pressed for time, a viewer can lean on these eight. Numbering and titles here match Wikipedia's episode lists.
- Season 1, episode 1, "Pilot": the premise, the main cast and the first descent to the ground.
- Season 1, episodes 12 and 13, "We Are Grounders" (Part I and Part II): the first season's closing run and the hinge into season 2.
- Season 2, episode 1, "The 48": the season opener, picking up straight after the first-season finale.
- Season 2, episodes 15 and 16, "Blood Must Have Blood" (Part One and Part Two): the second-season finale, often named as the series' high point.
- Season 3, episodes 15 and 16, "Perverse Instantiation" (Part One and Part Two): the third-season finale and the setup for everything that follows.
- Season 4, episode 13, "Praimfaya": the end of the season built around a deadline.
- Season 5, episode 1, "Eden": the time-jump premiere that sets the terms of the later seasons.
- Season 7, episode 16, "The Last War": the series finale.
Reading on The 100
8 takesThe pages listed here dig into single seasons and characters beyond what this guide covers.
The 100 Series Recap: Seasons 1 to 6 and How the Story Ended
The 100 follows the survivors of a nuclear apocalypse who keep searching for a place to live, and its seven seasons stack one enemy and one impossible choice on top of another. This recap covers seasons 1 through 6 in order and closes with how season 7 wrapped it up.In Defense of Bellamy Blake: His Season 3 Turn on The 100
Bellamy Blake behaves in season 3 of The 100 in ways that startled fans, siding with Pike and taking up a gun against the Grounders. The turn is not out of character: it follows from guilt over Mount Weather, a lost purpose and a habit of leaning on someone else's lead.Does Octavia Die in The 100? Major Character Deaths Explained
Does Octavia die in The 100? No: Octavia Blake survives all seven seasons and the series finale. The deaths that shaped her story belong to others, and this piece explains how Wells, Finn, Lincoln and Lexa died and which of those deaths the show earned.What Happened to Lexa in The 100? The Commander Was Never Weak
On the surface, Lexa in The 100 seems to have changed in season 3, with a new motto of blood will not have blood and a visible softness around Clarke. A closer look says she is the same strategist the show has always written, and the change is in how the audience reads her.Lincoln From The 100: Is He Going to Die After American Gods?
Yes. Lincoln, played by Ricky Whittle, is shot by Pike in “Stealing Fire,” season 3, episode 9 of The 100, after he surrenders to save other Grounder prisoners from execution. The worry started in late January 2016, when Starz announced that Whittle would lead its American Gods adaptation as Shadow Moon.Pike on The 100: The Problem With a Redemption That Comes Too Late
Pike, played by Michael Beach, spends most of season 3 of The 100 as a dangerous leader whose motives are never fully explained, and “Join or Die” tries to fix that with flashbacks to his time as a teacher on the Ark. The attempt is too late and works against the character, because the Pike the audience has hated is more convincing than the one the episode asks it to forgive.Does Emori Die in The 100? “False Gods” Review (Season 7)
Emori does not die in "False Gods," the third episode of The 100 season 7, but she does die later, in the series finale. The episode, aired June 3, 2020, sends Murphy and Emori into a failing reactor and turns Russell's execution into a coup for the Dark Commander.Emerson in The 100 “Demons”: The Good, the Bad and the Ugly Decisions
“Demons” is the twelfth episode of The 100 season 3, and it brings Emerson back from banishment to kill Sinclair and force Clarke to answer for her choices. It was sold as a horror episode, but the best scenes are quiet ones, and the worst decisions are the ones the characters make on screen.
Frequently asked questions about The 100
How many seasons of The 100 are there?
Seven. The 100 ran for seven seasons on The CW, from March 19, 2014, to September 30, 2020, and the series has 100 episodes in total. Season 7 was announced as the last in August 2019.
How many episodes does each season of The 100 have?
Season 1 has 13 episodes, seasons 2 and 3 have 16 each, seasons 4, 5 and 6 have 13 each, and season 7 has 16. That adds up to 100 episodes across the seven seasons, which is how the show got its count.
Where should I start with the 100 season 1?
Start with the pilot and watch in order. Season 1 is 13 episodes long and is the most self-contained part of the series, so it works as a test of whether the show suits you. Nothing in it requires background knowledge.
Do I have to watch every episode of The 100 in order?
Yes, since a skipped episode usually costs a later payoff. The show is heavily serialized, and characters, alliances and settings change from season to season. The list of key episodes in this guide is a catch-up aid, not a replacement.
Is The 100 based on a book?
Yes, loosely. It is based on the young adult novel series The 100 by Kass Morgan, which has four books: The 100 (2013), Day 21 (2014), Homecoming (2015) and Rebellion (2016). Jason Rothenberg developed it for television, and the show soon leaves the plot of the books behind.
Which season of The 100 is the best?
Rough Cut Review would point to season 2 for most first-time viewers, since it is where the show finds its identity and has the clearest sense of purpose. Season 4 is the strongest choice if you want a tight story with a deadline, and season 1 is the one to start with.
How many episodes does The 100 have in total?
100 episodes, across seven seasons. Seasons 2, 3 and 7 have 16 episodes each, and seasons 1, 4, 5 and 6 have 13 each. The 100th episode is the series finale, "The Last War," which aired on September 30, 2020.
When did The 100 start and end?
The 100 premiered on March 19, 2014, on The CW, and the last episode aired on September 30, 2020. That is a run of a little over six years, with long gaps between some seasons.
Who created The 100?
Jason Rothenberg developed the series for The CW and wrote the pilot. He is also listed as the showrunner, and the series page on Wikipedia notes no change of showrunner during the run. The source material is Kass Morgan's novel series.
How many books are there in The 100 series?
Four. The novels by Kass Morgan are The 100 (September 3, 2013), Day 21 (September 25, 2014), Homecoming (February 26, 2015) and Rebellion (December 6, 2016). They are separate from the show, and the story events differ.
Does The 100 end properly?
Yes, it has a designated final season and a series finale. Season 7 was announced as the final season in August 2019 and ordered at 16 episodes, and the last episode, "The Last War," was written and directed by Jason Rothenberg. This guide does not describe what happens in it.
Was The 100 canceled?
Not in the usual sense. The CW renewed the show for season 7 on April 24, 2019, and in August 2019 announced that season 7 would be the last. Wikipedia does not give a reason for the decision, so none is stated here.
Is there a prequel to The 100?
Not an aired one. The CW developed a prequel and aired a backdoor pilot, "Anaconda," as episode 8 of season 7 on July 8, 2020. In November 2021, The CW decided not to move forward with the series.
What is "Anaconda" in The 100?
"Anaconda" is the eighth episode of season 7, aired July 8, 2020, and doubles as the pilot for a proposed prequel. Rothenberg wrote it and Ed Fraiman directed it. It sits in the season's broadcast order between "The Queen's Gambit" and "The Flock."
What language do the Grounders speak in The 100?
They speak Trigedasleng, called "Trig" on the show. David J. Peterson, who also created Dothraki and Valyrian for Game of Thrones, built it as an evolution of English.
Which actors are in The 100 for all seven seasons?
On Wikipedia's cast list, Eliza Taylor, Bob Morley and Marie Avgeropoulos carry no end season, so they are listed through the whole series. Lindsey Morgan is main cast in seasons 2 through 7, and Richard Harmon in seasons 3 through 7.
In what order should I watch The 100?
Watch it in broadcast order, season 1 through season 7. The show is serialized and there is no alternate sequence. "Anaconda" stays in place as episode 8 of season 7.
Sources
Episode counts, dates and credits on this page follow the reference below; each figure was checked against it in October 2026.
- The 100 (TV series), Wikipedia — season and episode tables, release dates and credits