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The Impossible - A Markiplier Fanfic(ish) by astrumnihilum
Fandoms: In Space With Markiplier (Web Series), Who Killed Markiplier? (Web Series), markiplier - Fandom
24 Oct 2025
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Summary
Heavily OC content but with lore ties into Markiplier egos.
MC USES NEOPRONOUNS - Xe/Xem/Xeir/Xeirs/Xemself
Prologue follows an altered ISWM plot line.- Language:
- English
- Words:
- 33,240
- Chapters:
- 14/?
- Hits:
- 19
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Collison Course by EYESORE_BOI
Fandoms: Markiplier TV (Web Series), In Space With Markiplier (Web Series), Mouthwashing (Video Game)
23 Oct 2025
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Summary
Set a year after the Invincible successfully made it through their trip, the Captain and their crew have been doing well in setting up a new colony for themselves, but there's still plenty of work to do. Maybe even more so then expected, since during a (what was supposed to be) short supplies run, they suddenly get alerted of a distress signal from a freighter ship called "Tulpar". They decide to investigate, always willing to help those in need, but...why does this feel a little wrong, Captain?
...
Basically, this whole fic is an ISWM × Mouthwashing crossover where the Invincible Crew finds the Tulpar Crew, and, well, let's just say things happen :] -
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Summary
wooho 007n7 preens Noli's wings elelel
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Where You Still Are by Talison_Loves_Fanfiction
Fandoms: Who Killed Markiplier? (Web Series), In Space With Markiplier (Web Series)
19 Sep 2025
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Summary
Abe follows an inexplicable pull back to his empty office, no cases, no reason, just instinct. What he finds waiting is something he never thought possible: You, alive and radiant, stepping through his world as if no time had passed since the night you vanished.
- Language:
- English
- Words:
- 1,228
- Chapters:
- 1/1
- Kudos:
- 4
- Hits:
- 22
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I'll break your bones, With all the love I carry by Lebanese_StarBoy
Fandoms: In Space With Markiplier (Web Series)
06 Sep 2025
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Summary
Anyone else simp for Engineer Mark, but specifically when he's an old man?
No? Just me? Alright..The older Mark tries to attack you in attempt of fixing "your" mistakes. When he fails to do so, thing get... freakyyyyy ;p
aka hate se- *explodes*
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The End is Near by Sheepwrite
Fandoms: In Space With Markiplier (Web Series), Who Killed Markiplier? (Web Series), Markiplier TV (Web Series)
02 Sep 2025
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Summary
The captain enters a new universe after exiting a wormhole. Will they make it out alive?
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We're Invincible (Under New Management) by Coffee_Birb, ThisCouldBeWorse
Fandoms: In Space With Markiplier (Web Series)
23 Aug 2025
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Summary
You used to be the captain of military ships throughout your career. You've led fleets and armies into battle and emerged victorious.
When you were assigned to this colonization mission, you thought of it as a mere vacation at best. (Or an offensive joke at worst.)
But you could never have imagined the horrors you were about to face…
.
.
.
Starting with the condition of this ship! WHO THE HELL GAVE THESE PEOPLE A PERMIT TO FLY?!~~~~
Or:War-hero captain gets on the Invincible II and uses common sense to fix the ship, before making the wormhole jump.
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Summary
Y/N is an old friend of Sally's, she moved into a new neighborhood with her. But when. Sally introduces her to her friend, the local butcher, wally darling things get-weird.
- Language:
- English
- Words:
- 5
- Chapters:
- 1/?
- Kudos:
- 7
- Hits:
- 167
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Summary
"This is not proper," The Detective thought hazily. It was unreasonably late, the city clock having chimed midnight long ago, and their situation was less than professional at best and outright suggestive at worst. But their mind was numb and the alcohol in their system made their skin buzz pleasantly, and maybe they were past caring about propriety.
[Or: Just The Captain (referred to as The Detective) and Mark working late into the night, sharing whiskey and cigarettes in a smoke-filled office.]
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A Bird With Broken Wings by ThisCouldBeWorse
Fandoms: In Space With Markiplier (Web Series), Mouthwashing (Video Game)
29 Jul 2025
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Summary
"What is it?" you asked, moving to his side by the console.
The radar display showed a single, insistent red blip against the sweeping green arc.
"It's a goddamn ghost story," Gunther muttered around his cigar.
Or:
A crossover between In Space With Markiplier’s warp-core chaos and Mouthwashing’s horrors. The Invincible II finds a long-lost ship adrift—but some missing things should stay forgotten. -
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Summary
"Mark."
He lifted the hand full of peanuts.
"Mark."
"Give me a reason."
"Mark! No, no, Mark!"The Captain tried pushing away, only succeeding in tangling themself in the blanket they hadn't realized curled around their body. "Mark! They're gonna get everywhere- Mark!"
"Doesn't seem like my problem."
"Mark!"
Mark's hand went into motion.
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A small collection of drabbles, ideas, and cut content from And It Starts Again (AISA) and the We Start Again (WSA) series. This will also include any extra ISWM content I make outside of the AISA universe and any updates on Again, Those Scars.
Series
- Part 2 of We Start Again
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(I wrote this on Tumblr back in 2022 and finally decided to archive it here.)
They remember.
None of them remember as much as The Captain, they're sure.
But that doesn't matter.
They remember.
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Shadows Beneath the wall by donutslayer124
Fandoms: Shingeki no Kyojin | Attack on Titan
17 Jul 2025
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Summary
Levi and you were captains to his squad, he was your friend, nothing more. Right?. A short journey to Wall Maria changes the perspective and takes a turn. For the best? Mhm…
- Language:
- English
- Words:
- 1,075
- Chapters:
- 1/1
- Hits:
- 30
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What Keeps You Safe (Rewrite) by that_one_annoying_coworker
Fandoms: In Space With Markiplier (Web Series)
02 Jul 2025
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Summary
The captain can't move on, not after everything she went through and it eventually boils over.
- Language:
- English
- Words:
- 1,500
- Chapters:
- 1/1
- Kudos:
- 8
- Hits:
- 66
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Alaya is a fangirl who loves fandoms. Oh, and she just so happens to have the ability to travel to fandom worlds in her dreams. She wakes up in "In Space with Markiplier", planning to take the safest route possible to save everyone and avoid mental scarring. But just when she thinks all is going well, things start to go off the rails. Everything stays on script no matter what she changes, Mark starts acting weird, and she even starts to get flashbacks to things that shouldn't have happened. There's something bigger going on behind the scenes and she needs to investigate before she can even begin to fix things. Will she be able to figure out what's going on before it's too late?
Series
- Part 4 of Imagine
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They Shoot You Someplace While We Ache To Come Home Somehow by Far_Writer6952
Fandoms: In Space With Markiplier (Web Series)
20 Jun 2025
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Summary
Not a voice, not a person, not any tangible thing tells him, but he knows that the Captain is coming.
And he has a plan.
He won’t be alone anymore.
The universe glitches and he sees them, looking confused in their bulky suit and that god forsaken helmet; once, a symbol of hope for him. Now, he wanted to smash the glass in.
He raises the fire extinguisher in his hands and sneaks up beside them, raises it to swing, steels himself for the satisfying ‘thunk’ he would feel when it made contact. “Hi, Captain.”
And he swung.
Series
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Once Upon a Time in Westeros 2: Legend of the Direwolf by PoptartSprinkles3
Fandoms: House of the Dragon (TV), A Song of Ice and Fire & Related Fandoms, A Song of Ice and Fire - George R. R. Martin, Underworld (Movies), Game of Thrones (TV), The Vampire Diaries (TV), The Last of Us (Video Games), In Space With Markiplier (Web Series), Cool Patrol - Ninja Sex Party (Song), Resident Evil (Movies - Anderson), The Originals (TV), Elder Scrolls V: Skyrim, Fallout (Video Games)
20 May 2025
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After insane events, Westeros history has been changed forever. In this sequel a new threat arises taking our Chaotic Idiots from Kingslanding far up North on a perilous adventure.
Series
- Part 2 of Once Upon a Time
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Time And Time Again I Went Away, But Then Would Come The Time When I Would Need You by Far_Writer6952
Fandoms: In Space With Markiplier (Web Series)
28 Apr 2025
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Summary
Nightmares woke you again for the fourth night in a row. Usually, you were able to calm yourself down, curl up in bed and repeat the same mantra to yourself as you tap your fingertips together and count.
But tonight was different. You saw Mark die, you saw him be torn apart by a black hole, shot by some Lady, sent out of the bay window and hurtled in the vacuum of space.
You saw multiples of him, all different and chaotic and mind boggling, claiming to know you and you’d think you’d know them. For a moment, you’d swear you remembered this life, but no.
No, they weren’t him. They weren’t your Mark. They looked like him, but they weren’t.
Series
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Mack from ISWM is stuck in a time loop, and I force him to repeat the 30 some-odd seconds of glitching after you say Mark's name in 'You're Not Mark!' over and over. Except! I also make it hurt like a bitch.
:)
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What have they done?
Why can he feel himself being torn apart? Atom by atom, everything seems to be collapsing… He suppresses a scream as he feels himself being torn to another place, bracing against the wall.
The world is tearing, just at the mention of one name. It’s not his name.
Why did they say his name?
“You do not get to choose whether or not I exist!” He can feel himself splitting open, like a thousand little needles ripping at the seams of his very being. “This is my shi-!”
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Everything You Thought You Knew Will Fall Apart, But You’ll Be All Right by Far_Writer6952
Fandoms: In Space With Markiplier (Web Series)
28 Mar 2025
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Summary
You blink, your breath leaving you in a shudder as you lift your head to look up at the familiar and concerned face.
Another nightmare, another uninterrupted sleep and the mindless panic that would have sent you right off the bed if it weren’t for him.
Him, who’s now gently wiping at the stray tears and asking if you’re okay.
Series