Once Upon a Slime

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For the achievement, see Once Upon a Slime (achievement).
Queen help book.png
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Quick guides provide a brief summary of the steps needed for completion.

Once Upon a Slime is a novice quest during which the player helps Peter get rid of the King Slime who is, once again, terrorising Rimmington.

Overview[edit | edit source]

Return of the king[edit | edit source]

Peter (top hat) chathead.png

Talk to Peter near the well in Rimmington. He informs the player that King Slime has returned to Rimmington and is once more terrorising the town, as illustrated by a cutscene. Peter has come up with a solution to get rid of the King Slime by creating a Queen Slime. As the player expresses how ridiculous his plan is, the Queen Slime also shows up in Rimmington. Peter explains that if the King Slime and the Queen Slime are happy together, then neither will threaten the town. To set them up together, Peter suggests that the King Slime needs a top hat to seduce Queen Slime. To obtain the top hat, he directs you to Thessalia in her clothes shop in Varrock.

Top hat shenanigans[edit | edit source]

Shrinking Machine.png
Thessalia chathead.png

Talk to Thessalia in her store in Varrock for a giant top hat. Return to Peter in Rimmington. He admonishes the player that the top hat is too big, and asks the player to return to Thessalia to get a regular-sized top hat instead. Return to Thessalia in Varrock and update her. Unfortunately, she only specialises in giant top hats, but suggests that Eva may help. Visit Eva, who is in the building north-west of Aubury's Rune Shop in south-eastern Varrock. She agrees to let the player be the first user of her Shrinking Machine. To use the machine, it must first need to configure it. The options are shown sequentially; answering one question prompts the next one. The first letters of the correct answers put together spell SHRINK.

Question/machine part Correct option
Button Panel One 1. Silver Button
Temperature Gauge 3. Hot
Button Panel Two 1. Red Button
Mode Of Functionality 2. Increase
Apply Voltage 2. No
Adjust Control Lever 1. KSL

The machine successfully changes the giant top hat into a regular-sized top hat. Return to Peter in Rimmington, who suggests putting the top hat on the King Slime. A cut scene is shown in which the Queen Slime seems to be uninterested in King Slime despite his new accessory.

Gloop gloop gloop[edit | edit source]

Lil Miss Gloop pet.png

Talk to Peter, whose next idea is poking the Queen Slime to figure out what exactly she is attracted to. Go up to the Queen Slime and poke her in order to receive pink goop. Talk to Peter again; he will then give the player a bucket. The pink goop can be used to locate the source of Queen Slime's distraction, which turns out to be the contents of Hetty's cauldron in the house directly east of the well in Rimmington. Use an empty bucket on the cauldron to receive a bucket of purple goop. Peter suggests using the purple goop on the King Slime like cologne. Use the bucket of purple goop on the King Slime and a cut scene ensues, during which the Queen Slime consumes and combines with the King Slime, leaving Peter and the player in shock. The couple leaves Rimmington, hopefully for good this time. Finish the quest by talking to Peter one last time. He keeps the top hat while you keep the pink goop, which is revealed to be a sentient entity.

Rewards[edit | edit source]

Once Upon a Slime reward.png
Additional rewards/activities

Achievements[edit | edit source]

Required for completing[edit | edit source]

Once Upon a Slime is not currently required for any quests or miniquests.

Transcript[edit | edit source]

Update history[edit | edit source]

The update history project is a work-in-progress – not all updates to this topic may be covered below. See here for how to help out!
  • patch 24 February 2020 (Update):
    • The quest marker for 'Once Upon a Slime' is now removed from the minimap and worldmap upon completion.
  • patch 17 February 2020 (Update):
    • King Slime's Top Hat now appears at the start of the newest list within the player wardrobe.
    • Fixed a typo that occurs in the Once Upon A Slime quest.
    • Completing the quest will now allow players to re-equip their Completionist capes without having to log back in.

Trivia[edit | edit source]

  • The quest name is a play on the stock phrase once upon a time.
  • Upon accepting the quest, Peter says "Happy days!" This might be a reference to the popular Terraria Youtuber HappyDays, given the presence of a King Slime boss in Terraria.

References[edit | edit source]

  1. ^ Jagex. Mod Mohawk's Twitter account. 10 February 2020. (Archived from the original on 10 February 2020.) Mod Mohawk: "[Who worked on Once Upon a Slime?] @JagexCampfire and Mod Rain"