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The Worst Episodes of That Time I Got Reincarnated as a Slime

Every episode of That Time I Got Reincarnated as a Slime ranked from worst to best. Explore the Worst Episodes of That Time I Got Reincarnated as a Slime!

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Mikami's boring life ends abruptly when he's reincarnated in another world as a slime monster. He then forms a party of monsters, changing everything.

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  1. #1 Worst Episode
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    That Time I Got Reincarnated as a Slime Season 3 Episode 12 - Festival Preparations
    6.6/10(304 votes)

    #1 - Festival Preparations

    S3:E12

    Everyone in Tempest is busy preparing for the festival to celebrate the country's opening. Rimuru visits Mjöllmile to share ideas on forms of entertainment that will keep people coming back for more.

    Director:Unknown
    Writer:Unknown

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  2. That Time I Got Reincarnated as a Slime Season 3 Episode 4 - Everyone Has a Part to Play
    6.7/10(332 votes)

    #2 - Everyone Has a Part to Play

    S3:E4

    Responding to Rimuru's concerns about monsters in the forest harming humans, Vesta and Kaijin reveal a new invention they hope will keep the road to Tempest safe. Also, Rimuru assigns a new task to Geld.

    Director:Unknown
    Writer:Unknown

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  3. That Time I Got Reincarnated as a Slime Season 3 Episode 6 - Those Approaching
    6.7/10(345 votes)

    #3 - Those Approaching

    S3:E6

    The spread of false information causes the Temple Knights to assemble, endangering Diablo's plan to conquer Falmuth. Meanwhile, Rimuru learns that Hinata is on her way to Tempest.

    Director:Unknown
    Writer:Unknown

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  4. That Time I Got Reincarnated as a Slime Season 3 Episode 13 - Invitation for All Nations
    6.7/10(294 votes)

    #4 - Invitation for All Nations

    S3:E13

    Demon Lord Ramiris tries to argue her way into moving to Tempest, where there's great food, hot springs, and ample entertainment. Rimuru happens to walk into the argument and comes up with a way to make use of Ramiris's skills.

    Director:Unknown
    Writer:Unknown

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  5. That Time I Got Reincarnated as a Slime Season 3 Episode 3 - Peaceful Days
    6.9/10(343 votes)

    #5 - Peaceful Days

    S3:E3

    Expecting visitors from all races to come calling after learning that Rimuru now controls the entire Great Forest of Jura, Rimuru decides to hold a festival to introduce himself and Tempest to the world, with the goal of attracting new citizens.

    Director:Unknown
    Writer:Unknown

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  6. That Time I Got Reincarnated as a Slime Season 3 Episode 11 - Reconciliation and Agreement
    6.9/10(311 votes)

    #6 - Reconciliation and Agreement

    S3:E11

    The Seven Days Clergy have been purged, and the battle is over. Rimuru and Hinata hold a meeting to discuss future relations between their two nations, and the masterminds behind the whole conflict, the Eastern merchants, are revealed.

    Director:Unknown
    Writer:Unknown

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  7. That Time I Got Reincarnated as a Slime Season 3 Episode 14 - Labyrinth and Storm Dragon
    6.9/10(290 votes)

    #7 - Labyrinth and Storm Dragon

    S3:E14

    Rimuru is building a dungeon in preparation for the upcoming festival. It will feature treasure chests containing weapons made by Kurobe, and Veldora will inhabit the deepest floor as the final boss. Then Milim suddenly shows up with a suggestion...

    Director:Unknown
    Writer:Unknown

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  8. That Time I Got Reincarnated as a Slime Season 3 Episode 18 - A Throng of Visitors
    6.9/10(255 votes)

    #8 - A Throng of Visitors

    S3:E18

    After meeting with the kings of various nations, Rimuru heads to Engrassia to invite his former students to the festival. The kids are thrilled to go back with him to Tempest, but then the hero Masayuki arrives as well...

    Director:Unknown
    Writer:Unknown

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  9. That Time I Got Reincarnated as a Slime Season 3 Episode 17 - The Lightspeed Hero
    7.0/10(267 votes)

    #9 - The Lightspeed Hero

    S3:E17

    After learning about an elf slave trade, Rimuru had Soei investigate, but it turns out the slave traders have already been shut down by Masayuki, the Lightspeed Hero. Word is now spreading that the Hero is headed to Tempest to slay a Demon Lord...

    Director:Unknown
    Writer:Unknown

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  10. That Time I Got Reincarnated as a Slime Season 3 Episode 19 - Festival Eve
    7.1/10(258 votes)

    #10 - Festival Eve

    S3:E19

    The night before the Opening Festival, Rimuru throws a lavish banquet for all the nobles and royalty visiting Tempest. When the party is in full swing, Empress Elmesia of the Sorcerous Dynasty of Thalion arrives, throwing everyone into chaos.

    Director:Unknown
    Writer:Unknown

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  11. That Time I Got Reincarnated as a Slime Season 1 Episode 18 - Evil Creeps Closer
    7.2/10(533 votes)

    #11 - Evil Creeps Closer

    S1:E18

    Phobio can't restrain his anger toward Milim. He finds himself faced with Footman and Tear, two masked members of the Moderate Harlequin Alliance, who suggest that he become a Demon Lord to take revenge on Milim. They tell him that he can accomplish this using the power of Charybdis. Meanwhile, the Jura Tempest Federation sends Youm out on a journey to make the world believe he was the champion who defeated the Orc Lord.

    Director:Unknown
    Writer:Unknown

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  12. That Time I Got Reincarnated as a Slime Season 2 Episode 15 - Ramiris's Warning
    7.2/10(478 votes)

    #12 - Ramiris's Warning

    S2:E15

    Rimuru announces his plan to back Youm as the new king of Falmuth. After hearing this, Gazel tests Youm to see if he has what it takes to be a ruler, and Youm answers with full sincerity. Erald also takes a liking to Rimuru after hearing him say he just wants to create a world where everyone can prosper and smile. Thus Rimuru and his allies look ahead to the battle against their new enemy, Clayman.

    Director:Unknown
    Writer:Unknown

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  13. That Time I Got Reincarnated as a Slime Season 3 Episode 2 - The Saint's Intentions
    7.2/10(341 votes)

    #13 - The Saint's Intentions

    S3:E2

    Yuuki is saddened by the death of Clayman, and Luminus is saddened by the death of Roy. Steeped in sadness, and having lost their friends, they seek their next move against Rimuru, who has grown in power and become a true Demon Lord.

    Director:Unknown
    Writer:Unknown

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  14. That Time I Got Reincarnated as a Slime Season 3 Episode 15 - Audience
    7.2/10(271 votes)

    #14 - Audience

    S3:E15

    Numerous representatives from across the Great Forest of Jura have assembled in Tempest to congratulate Rimuru on his appointment to Demon Lord. Shuna requests holding a three-day audience to meet with them.

    Director:Unknown
    Writer:Unknown

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  15. That Time I Got Reincarnated as a Slime Season 3 Episode 20 - Nation's Opening Festival
    7.2/10(254 votes)

    #15 - Nation's Opening Festival

    S3:E20

    It's day one of the festival, and Rimuru finally gets to see all of his friends' performances and presentations. As he's enojying the festivities, he's summoned by Luminus...

    Director:Unknown
    Writer:Unknown

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  16. That Time I Got Reincarnated as a Slime Season 1 Episode 17 - The Gathering
    7.3/10(534 votes)

    #16 - The Gathering

    S1:E17

    The Demon Lord Carrion has sent one of his Three Beastketeers, Phobio, on a raid of Rimuru's city. However, Phobio is quickly defeated when Milim meets his attack with her own. Rimuru and his subordinates then ask Phobio why he has come to their town.

    Director:Unknown
    Writer:Unknown

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  17. That Time I Got Reincarnated as a Slime Season 1 Episode 20 - Yuuki Kagurazaka
    7.3/10(533 votes)

    #17 - Yuuki Kagurazaka

    S1:E20

    The threat of Charybdis has gone. That night, Rimuru has a dream in which he sees Shizu teaching children at her school in the Kingdom of Ingrassia—a dream showing Shizu's lingering regret. To see her wishes through, Rimuru leaves the Jura Tempest Federation and heads for the capital of the Kingdom of Ingrassia. His first goal is to meet with the Grandmaster of the Guild, Yuuki Kagurazaka, who happens to be a Summon and a former student of Shizu's.

    Director:Tokugane Tanizawa
    Writer:Unknown

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  18. That Time I Got Reincarnated as a Slime Season 2 Episode 14 - A Meeting of Humans and Monsters
    7.3/10(476 votes)

    #18 - A Meeting of Humans and Monsters

    S2:E14

    As prominent figures from several nations assemble in Tempest for a meeting, Laplace and his companions formulate a plan centered around Clayman. Then someone familiar joins the discussion...

    Director:Ken Sanuma
    Writer:Unknown

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  19. That Time I Got Reincarnated as a Slime Season 2 Episode 16 - The Congress Dances
    7.3/10(465 votes)

    #19 - The Congress Dances

    S2:E16

    A new force has suddenly risen to power in the Great Forest of Jura, and its leader, Clayman, proposes that the Demon Lords hold Walpurgis with the goal of sanctioning the slime who deceived him. Rimuru also begins to prepare for a battle with Clayman, but observing the enemy army's movements reveals that Clayman's target is not Tempest, but Eurazania. Clayman's army will arrive in Eurazania within two days. Can Rimuru's forces get there in time?

    Director:Ryo Nakamura
    Writer:Unknown

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  20. That Time I Got Reincarnated as a Slime Season 3 Episode 5 - Meeting of Both Sides
    7.3/10(338 votes)

    #20 - Meeting of Both Sides

    S3:E5

    A war council led by Hinata is held in the Holy Empire of Lubelius. Moments after Hinata declares her intent to meet Rimuru and talk to him, she receives a hostile message from Rimuru.

    Director:Unknown
    Writer:Unknown

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  21. That Time I Got Reincarnated as a Slime Season 1 Episode 1 - The Storm Dragon, Veldora
    7.4/10(774 votes)

    #21 - The Storm Dragon, Veldora

    S1:E1

    Mikami Satoru, a businessman, is stabbed by a criminal on the street and killed. When he regains consciousness in the darkness, he finds that he's been reincarnated as a slime! With nothing better to do, he spends his time devouring all the rare herbs and precious ores he comes across. As he does, he encounters the Storm Dragon Veldora, who was sealed in this cave 300 years ago by a hero's "Unlimited Imprisonment" skill. He's frightened at first, but as they talk, he becomes friends with the long-isolated Veldora.

    Director:Atsushi Nakayama
    Writer:Kazuyuki Fudeyasu

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  22. That Time I Got Reincarnated as a Slime Season 1 Episode 2 - Meeting the Goblins
    7.4/10(685 votes)

    #22 - Meeting the Goblins

    S1:E2

    The slime Mikami and the Storm Dragon Veldora decide to give each other names. Veldora gives the slime Mikami the name "Rimuru," and Rimuru comes up with a family name for both of them: "Tempest." Then Rimuru uses his Predator skill to take Veldora into his body and analyze the "Unlimited Imprisonment" seal in hopes of breaking it... but this action sends a shock through the nations surrounding the Great Forest of Jura. With Veldora gone, there's a chance that the larger nations could become bold and invade the smaller provinces. With no knowledge of this, Rimuru leaves the cave and meets some Goblins.

    Director:Shintaro Inokawa
    Writer:Kazuyuki Fudeyasu

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  23. That Time I Got Reincarnated as a Slime Season 1 Episode 16 - Demon Lord Milim Attacks
    7.4/10(553 votes)

    #23 - Demon Lord Milim Attacks

    S1:E16

    The Jura Tempest Federation, with Rimuru as its leader, has formed an alliance with the Armed Nation of Dwargon. Just as Rimuru thinks there are only peaceful days ahead, he senses an enormous mass of magical power heading straight for his location at an incredible speed. When the smoke from its collision with the ground clears, standing in its place is a humanoid figure. She is the Demon Mord Milim, the one and only Dragonoid and the one bearing the nickname "Destroyer." Ranga, Benimaru, and the others who face her are quickly overwhelmed by her power.

    Director:Unknown
    Writer:Unknown

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  24. That Time I Got Reincarnated as a Slime Season 1 Episode 21 - Shizu-san's Students
    7.4/10(527 votes)

    #24 - Shizu-san's Students

    S1:E21

    Rimuru becomes the new teacher for Shizu's students. However, having been summoned into this world against their will and facing shortened lifespans as a result, the children's feelings are complicated, and they're reluctant to accept Rimuru. So Rimuru proposes a series of mock battles with each of them to ascertain their abilities and allow them to let off steam.

    Director:Ouri Yasukawa
    Writer:Unknown

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  25. That Time I Got Reincarnated as a Slime Season 1 Episode 22 - Conquering the Labyrinth
    7.4/10(531 votes)

    #25 - Conquering the Labyrinth

    S1:E22

    Rimuru tries to think of a way to save the children of Freedom Academy who are fated to die. The idea he comes up with is to have superior spirits inhabit each of them, as Shizu had, so their lives won't end prematurely. Determined to whatever it takes to save them, Rimuru leads the children to the Dwelling of Spirits, where superior spirits can be found. But as they make their way further inside, a Golem made of magisteel and controlled by the fairy Ramiris stands in their path.

    Director:Unknown
    Writer:Unknown

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Worst Episodes Summary

"Festival Preparations" is the worst rated episode of "That Time I Got Reincarnated as a Slime". It scored 6.6/10 based on 304 votes. Directed by Unknown and written by Unknown, it aired on 6/21/2024. This episode scored 0.1 points lower than the second lowest rated, "Everyone Has a Part to Play".