Simon/Grace/Engie fics

Series Metadata

Listing Series

• Grace and (Boy)Friends Save Stars by PanickingPansexual

  Fandoms: Project Hail Mary - Andy Weir, Project Hail Mary (2026), Iron Lung (2026), In Space With Markiplier (Web Series)  

  • Teen And Up Audiences
  • No Archive Warnings Apply
  • M/M, Multi
  • Work in Progress

  08 Jun 2026

  Tags

  • No Archive Warnings Apply
  • The Convict | Simon (Iron Lung)/Ryland Grace
  • The Convict | Simon (Iron Lung)/Ryland Grace/Head Engineer Mark (In Space With Markiplier)
  • Ryland Grace/Head Engineer Mark (In Space With Markiplier)
  • Ryland Grace & Rocky
  • David & Jack (Iron Lung)
  • Ryland Grace
  • The Convict | Simon (Iron Lung)
  • Head Engineer Mark (In Space with Markiplier)
  • Y/N | The Captain (In Space with Markiplier)
  • Ava (Iron Lung)
  • David (Iron Lung)
  • Jack (Iron Lung)
  • Alternate Universe
  • Everyone is Gay
  • and ryland grace is a very pretty man
  • Multiple Crossovers
  • Other Additional Tags to Be Added
  • The Quiet Rapture (Iron Lung)
  • Multiple Universes Colliding
  • POV Alternating
  • POV Third Person
  • Guilt
  • Religious Guilt
  • Survivor Guilt
  • Angst and Romance
  • Autistic Ryland Grace
  • Soft Head Engineer Mark (In Space With Markiplier)
  • it/its pronouns for Rocky
  • Mute Y/N | The Captain (In Space With Markiplier)
  • Dialogue Heavy
  • Canon-Typical Blood (Iron Lung)
  • wtf is a slow burn we're speedrunning ts
  • Communication
  • Eden is a Death Cult (Iron Lung)
  • Eden is a Cult (Iron Lung)
  • Touch-Starved
  • everyone is touch starved
  • Night Terrors
  • Flashbacks
  • Light Angst
  • Spoilers
  • In Space With Markiplier Spoilers
  • all of them would be so awkward around their crushes and i hope i showed that
  • There Was Only One Bed
  • The Convict | Simon Has Religious Trauma (Iron Lung)
  • internalized homophobia for a whole 3 seconds

  Summary

  The universe is vanishing. The stars and planets are disappearing without a trace...

  Grace was sent to prevent it.
  Simon was sent to understand it.
  And Mark is trying to fix it.

  They need each other if they want to stand a chance of saving the universe.
  So what happens when the three missions collide?

  Romance. Obviously.
  

  Series

  • Part 2 of My Markiplier Hyperfixation
  • Part 1 of Simon/Grace/Engie fics

  Language:

  English

  Words:

  22,481

  Chapters:

  8/?

  Comments:

  53

  Kudos:

  185

  Bookmarks:

  32

  Hits:

  2,405

• Lend a Hand (to Take Him Apart) by PanickingPansexual

  Fandoms: Iron Lung (2026), Project Hail Mary (2026), Project Hail Mary - Andy Weir, In Space With Markiplier (Web Series)  

  • Explicit
  • No Archive Warnings Apply
  • M/M, Multi
  • Complete Work

  23 May 2026

  Tags

  • No Archive Warnings Apply
  • The Convict | Simon (Iron Lung)/Ryland Grace/Head Engineer Mark (In Space With Markiplier)
  • The Convict | Simon (Iron Lung)/Ryland Grace
  • The Convict | Simon (Iron Lung)/Head Engineer Mark (In Space With Markiplier)
  • Ryland Grace/Head Engineer Mark (In Space With Markiplier)
  • Head Engineer Mark (In Space with Markiplier)
  • Ryland Grace
  • The Convict | Simon (Iron Lung)
  • Birthday Sex
  • Birthday Presents
  • Amputee The Convict | Simon (Iron Lung)
  • Explicit Sexual Content
  • Explicit Consent
  • Dirty Talk
  • Nipple Play
  • Anal Fingering
  • Anal Sex
  • Oral Sex
  • Spitroasting
  • Coming Inside Someone
  • Come Swallowing
  • Threesome - M/M/M
  • Aftercare
  • Do pictures count as voyeurism
  • Plot What Plot/Porn Without Plot
  • Pillow Talk
  • Top Ryland Grace
  • Top Head Engineer Mark
  • hilarious that that's not a tag
  • Bottom The Convict | Simon (Iron Lung)
  • Established Relationship

  Summary

  Grace and Mark have been preparing for this day for a few months now, and it's finally happening.

  Today is Simon's birthday.

  And they have a few surprises prepared for him.

  Series

  • Part 2 of Simon/Grace/Engie fics
  • Part 4 of My Markiplier Hyperfixation

  Language:

  English

  Words:

  3,675

  Chapters:

  1/1

  Comments:

  15

  Kudos:

  158

  Bookmarks:

  8

  Hits:

  1,743

• Collecting Samples by PanickingPansexual

  Fandoms: Project Hail Mary (2026), Project Hail Mary - Andy Weir, In Space With Markiplier (Web Series), Iron Lung (2026)  

  • Explicit
  • No Archive Warnings Apply
  • M/M, Multi
  • Complete Work

  26 May 2026

  Tags

  • No Archive Warnings Apply
  • The Convict | Simon (Iron Lung)/Ryland Grace/Head Engineer Mark (In Space With Markiplier)
  • Ryland Grace/Head Engineer Mark (In Space With Markiplier)
  • The Convict | Simon (Iron Lung)/Ryland Grace
  • The Convict | Simon (Iron Lung)/Head Engineer Mark (In Space With Markiplier)
  • The Convict | Simon (Iron Lung)
  • Ryland Grace
  • Head Engineer Mark (In Space with Markiplier)
  • Teasing
  • Vibrators
  • Butt Plugs
  • Multiple Orgasms
  • Orgasm Delay
  • Orgasm Control
  • Double Penetration in One Hole
  • Double Penetration
  • Double Anal Penetration
  • Begging
  • Safe Sane and Consensual
  • Safewords
  • Aftercare
  • Dacryphilia
  • Crying During Sex
  • Plot What Plot/Porn Without Plot
  • Punishment
  • Ryland Grace is a Leaky Space Blob
  • Light Dom/sub
  • Top The Convict | Simon (Iron Lung)
  • Top Head Engineer Mark (In Space With Markiplier)
  • still not a tag lol
  • Bottom Ryland Grace
  • Amputee The Convict | Simon (Iron Lung)
  • Wank and Tell | Creator is Open to Comments about Masturbating to This Work
  • just cuz im curious i swear
  • Dirty Talk
  • Threesome - M/M/M

  Summary

  Simon is not prepared to see Grace in the lab that morning. Not because he wasn’t expecting him to be there, but because he wasn’t expecting the man to be in a tank top and what appear to be booty shorts that say “I’m collecting data” over his ass. 
  The man is hunched over the table with his head hung low. Mark stands beside him, gently rubbing his lower back as his limbs tremble, occasionally skimming his fingers under the waistband of his shorts or the hem of his shirt. He’s holding something in his other hand.
  If Simon listens very carefully, he can hear something buzzing faintly.

  OR

  The one where Grace gets teased and ravaged by his lovers.

  Series

  • Part 3 of Simon/Grace/Engie fics
  • Part 5 of My Markiplier Hyperfixation

  Language:

  English

  Words:

  3,746

  Chapters:

  1/1

  Collections:

  1

  Comments:

  34

  Kudos:

  307

  Bookmarks:

  35

  Hits:

  3,351