Markiplier Universe/PHM
Series Metadata
Listing Series
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I’ll cut my hair, to make you stare by AngelBoy3434
Fandoms: Iron Lung (2026), In Space With Markiplier (Web Series)
19 May 2026
Tags
Summary
Simon needed a haircut and the only one he dared trust to do it was Mark, surely this couldn’t end badly
Series
- Part 1 of Markiplier Universe/PHM
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I need somebody dearly, and darling, you’d be sublime by AngelBoy3434
Fandoms: Iron Lung (2026), Project Hail Mary (2026)
22 May 2026
Tags
Summary
Grace hadn’t been able to regress since Simon showed up, which is fine, until it kinda isn’t.
~~~
The age regression tag in the Project Hail Mary fandom is criminally bare and it’s my job as a writer to try and fix that
Edit: WTF ARE YALL COMING FROM IS THE TAG TRULY THIS BARE
Series
- Part 2 of Markiplier Universe/PHM
- Part 4 of Little Space <3
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Give me something to hold onto, or I’ll slip right into little space by AngelBoy3434
Fandoms: Iron Lung (2026), Project Hail Mary (2026)
24 May 2026
Tags
Summary
Grace is still haunted by nightmares of what happened to him before he was sent on this mission, Rocky and Simon fix.
~~~
Adding more to this empty tag because the first one popped off lmao. Also give me ideas if yall have requests 👀
Series
- Part 3 of Markiplier Universe/PHM
- Part 5 of Little Space <3
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There’s nothing sweeter than my baby by AngelBoy3434
Fandoms: Project Hail Mary (2026), Iron Lung (2026)
25 May 2026
Tags
Summary
Simon is hyped up on sugar, what could go wrong?
A lot, a lot could go wrong.
~~~
This fic means that I am now 1/4 of the agere tag for PHM (3/12) and 1/3 (3/9) for Iron Lung which is so funny to me. Shout out to Vampy for feeding me ideas (so I can feed their obsession)
Series
- Part 4 of Markiplier Universe/PHM
- Part 6 of Little Space <3
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Are my legs gonna last? Is it too much to ask? by AngelBoy3434
Fandoms: Project Hail Mary (2026), Iron Lung (2026)
26 May 2026
Tags
Summary
Years after arriving on Erid the chronic pain is catching up to Simon, and Ryland a little. Ryland deals with it better than Simon seems to, but that’s not a good thing.
Series
- Part 4 of Iron Lung Angst
- Part 5 of Markiplier Universe/PHM
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I want the same sweetness by AngelBoy3434
Fandoms: Project Hail Mary (2026), Iron Lung (2026)
02 Jun 2026
Tags
Summary
Simon really wants to be little, but he can’t be right? Right?
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Adding more to the PHM and Iron Lung agere tag for funzies (also this is my 69th fic)
Series
- Part 7 of Little Space <3
- Part 6 of Markiplier Universe/PHM
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Is babysitting pebbles technically rocksitting question? by AngelBoy3434
Fandoms: Iron Lung (2026), Project Hail Mary (2026)
04 Jun 2026
Tags
Summary
Ryland has to go teach class while Rocky and Adrian watch little Simon, fluff ensues
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There’s barely any little Simon fics so I gotta work on fixing that as well ofc
Series
- Part 8 of Little Space <3
- Part 7 of Markiplier Universe/PHM
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Tags
Summary
Rocky never told Grace he regressed, but doesn’t take too much to figure it out
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Spreading the Little Rocky Agenda like the people have asked for
Series
- Part 9 of Little Space <3
- Part 8 of Markiplier Universe/PHM
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You’re an angel, I’m a dog by AngelBoy3434
Fandoms: Iron Lung (2026), Project Hail Mary (2026)
13 Jun 2026
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Summary
An argument between Simon and Ryland leaves Simon spiraling about how on Eden he used to be called “Street Dog” before he was ever known as the Butcher. Adrian is there to help
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I wrote 95% while on pain killers that kept trying to knock me out god forgive my sins
Series
- Part 9 of Markiplier Universe/PHM
- Part 5 of Iron Lung Angst
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All they do is wrap you up in their arms and hold on tight without an ounce of selfishness in it by AngelBoy3434
Fandoms: Iron Lung (2026), Project Hail Mary (2026)
16 Jun 2026
Tags
Summary
Simon has a nightmare and goes for Ryland’s cardigan for comfort afterwards, which Ryland finds adorable.
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This was part request part feeding the little Simon agenda
Series
- Part 10 of Little Space <3
- Part 10 of Markiplier Universe/PHM
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If you still believe in the lord above get on your hands and knees and pray for us by AngelBoy3434
Fandoms: Project Hail Mary (2026), Iron Lung (2026)
08 Aug 2026
Tags
Summary
Ryland Grace is a single father who just freshly graduated college and is excited to spend time with his one year old daughter.
Simon Edenson is a botany major who is in his junior year of college and is dealing with escaping from the cult he lived in most of his life.
Them meeting couldn't end badly could it?
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Bloodmary but parent au has been haunting my brain so I had to put it into words
Series
- Part 11 of Markiplier Universe/PHM
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Something is rotten inside of me, I have to find it and cut it out by AngelBoy3434
Fandoms: Project Hail Mary (2026), Iron Lung (2026)
07 Jul 2026
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Summary
Ryland Grace and Simon returned back to earth together, but at the cost of both of their physical healths. Ryland only has one person who he truly blames
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Half of this sat in my drafts for a month because I’ve been so focused on my other fic with baby Andi
Series
- Part 12 of Markiplier Universe/PHM
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Tags
Summary
Ryland and Adrian build a greenhouse for Simon as a surprise, but of course he immediately age regresses and has a blast
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Feeding the little Simon agenda some more, even though I've been so focused on my other fics
Series
- Part 13 of Markiplier Universe/PHM
- Part 11 of Little Space <3