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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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Corporate worker Mikami Satoru is stabbed by a random killer, and is reborn to an alternate world. But he turns out to be reborn a slime! Thrown into this new world with the name Rimuru,

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  1. #1 Worst Episode
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    That Time I Got Reincarnated as a Slime Season 4 Episode 13 - New Companions
    6.5/10(549 votes)

    #1 - New Companions

    S4:E13

    Ramiris and Veldora are feeling overworked, so they ask Rimuru to find assistants for them.

    Director:Unknown
    Writer:Unknown

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  2. That Time I Got Reincarnated as a Slime Season 3 Episode 6 - Those Approaching
    6.8/10(616 votes)

    #2 - 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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  3. That Time I Got Reincarnated as a Slime Season 4 Episode 15 - An Unsettling Feeling
    7.0/10(3 votes)

    #3 - An Unsettling Feeling

    S4:E15

    As Tempest continues to grow and evolve, the Moderate Harlequin Alliance approaches Demon Lord Leon.

    Director:Unknown
    Writer:Unknown

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  4. That Time I Got Reincarnated as a Slime Season 3 Episode 3 - Peaceful Days
    7.2/10(616 votes)

    #4 - 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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  5. That Time I Got Reincarnated as a Slime Season 3 Episode 4 - Everyone Has a Part to Play
    7.2/10(608 votes)

    #5 - 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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  6. That Time I Got Reincarnated as a Slime Season 4 Episode 12 - Tempest Evolves
    7.2/10(547 votes)

    #6 - Tempest Evolves

    S4:E12

    Rimuru shares his plans for Tempest's future, including a new system of government and Council representation.

    Director:Unknown
    Writer:Unknown

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  7. That Time I Got Reincarnated as a Slime Season 3 Episode 12 - Festival Preparations
    7.3/10(583 votes)

    #7 - 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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  8. That Time I Got Reincarnated as a Slime Season 3 Episode 13 - Invitation for All Nations
    7.3/10(567 votes)

    #8 - 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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  9. That Time I Got Reincarnated as a Slime Season 3 Episode 17 - The Lightspeed Hero
    7.4/10(526 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 5 - Meeting of Both Sides
    7.5/10(605 votes)

    #10 - 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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  11. That Time I Got Reincarnated as a Slime Season 3 Episode 11 - Reconciliation and Agreement
    7.5/10(583 votes)

    #11 - 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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  12. That Time I Got Reincarnated as a Slime Season 3 Episode 14 - Labyrinth and Storm Dragon
    7.5/10(558 votes)

    #12 - 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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  13. That Time I Got Reincarnated as a Slime Season 3 Episode 18 - A Throng of Visitors
    7.5/10(518 votes)

    #13 - 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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  14. That Time I Got Reincarnated as a Slime Season 4 Episode 14 - The Black Numbers
    7.5/10(701 votes)

    #14 - The Black Numbers

    S4:E14

    Diablo returns with new demon subordinates to add to Tempest's ranks.

    Director:Unknown
    Writer:Unknown

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  15. That Time I Got Reincarnated as a Slime Season 3 Episode 2 - The Saint's Intentions
    7.6/10(600 votes)

    #15 - 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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  16. That Time I Got Reincarnated as a Slime Season 3 Episode 21 - The Martial Arts Tournament
    7.6/10(513 votes)

    #16 - The Martial Arts Tournament

    S3:E21

    A martial arts tournament is being held! The winner will be given the right to challenge Rimuru. The hero, Masayuki, will be participating in the tournament. Rimuru wants to uncover the hero's true strength, so they get Geld and Gobta to participate.

    Director:Unknown
    Writer:Unknown

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  17. That Time I Got Reincarnated as a Slime Season 4 Episode 8 - The Groundwork of Greed
    7.6/10(744 votes)

    #17 - The Groundwork of Greed

    S4:E8

    Glenda reveals all she knows about the Council and the Rozzos, and Rimuru prepares to inspect ancient ruins.

    Director:Unknown
    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
    7.7/10(740 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 15 - Ramiris's Warning
    7.7/10(741 votes)

    #19 - 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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  20. That Time I Got Reincarnated as a Slime Season 3 Episode 20 - Nation's Opening Festival
    7.7/10(506 votes)

    #20 - 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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  21. That Time I Got Reincarnated as a Slime Season 3 Episode 22 - Settling the Score with the Hero
    7.7/10(498 votes)

    #21 - Settling the Score with the Hero

    S3:E22

    Gazel and Elmesia pledge to assist Rimuru with Tempest's lack of funding. Elmesia then proposes an alliance, but she's concerned about the danger Diablo poses.

    Director:Unknown
    Writer:Unknown

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  22. That Time I Got Reincarnated as a Slime Season 1 Episode 2 - Meeting the Goblins
    7.8/10(1038 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 4 - In the Kingdom of the Dwarves
    7.8/10(968 votes)

    #23 - In the Kingdom of the Dwarves

    S1:E4

    Rimuru and his companions visit the Dwarven Kingdom, the Armed Nation of Dwargon, in search of some artisans to help the Goblins learn to supply their own food, shelter, and clothing. However, a skirmish just outside the city gate lands Rimuru and Gobta in a prison cell. Then there's a report of an Armorsaurus in the nearby mines!

    Director:Tokugane Tanizawa
    Writer:Kazuyuki Fudeyasu

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  24. That Time I Got Reincarnated as a Slime Season 3 Episode 1 - Demons and Strategies
    7.8/10(700 votes)

    #24 - Demons and Strategies

    S3:E1

    Rimuru has returned to Jura after having attended Walpurgis. Diablo informs Rimuru of his mission to deal with the Kingdom of Falmuth. Having presented the kingdom with three options at a resolution, the clock on the week for their answer ticks down.

    Director:Unknown
    Writer:Unknown

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  25. That Time I Got Reincarnated as a Slime Season 3 Episode 7 - Saint and Demon Clash
    7.8/10(596 votes)

    #25 - Saint and Demon Clash

    S3:E7

    As Hinata makes her way to Tempest, the ramen and well-built roads she sees along the way prove to her that Rimuru genuinely wants monsters and humans to coexist. But against her wishes, one of her men is also on his way to Tempest...

    Director:Unknown
    Writer:Unknown

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Worst Episodes Summary

"New Companions" is the worst rated episode of "That Time I Got Reincarnated as a Slime". It scored 6.5/10 based on 549 votes. Directed by Unknown and written by Unknown, it aired on 7/3/2026. This episode scored 0.3 points lower than the second lowest rated, "Those Approaching".