Best Epic MegOp Fanfics
MegOp fanfics over 100,000 words. All curated from AO3 and ranked by kudos.
Top 6 Epic MegOp Fanfics
Ranked by AO3 kudos. These are reader-favorite long-form MegOp fics — save them for offline reading.
House Divided
by spaceliquid
It all started with the Jettwins.When their Decepticon coding begins to grow more active, Optimus Prime has to seek help from the last person he wants to see: the captive Decepticon leader. Megatron names the price for his cooperation, and it is nothing like Optimus expected. However, when an old en
Battlesleep
by Reyairia
Megatron escaping from prison was, of course, Sentinel’s frag-up. What Optimus didn’t count on was being kidnapped by the warlord on his way out.Now, halfway across the galaxy, Optimus must discover the reason behind Megatron’s reluctance to kill him, and with it a secret of his species’ biology tha
Turn of a Switch
by spaceliquid
One day, Orion Paxes from IDW and TFP universes switch places, and an unfortunate miner from Tarn meets an archivist instead of a police officer. What will it change? Oh, so many things.
you’re dying of thirst (so hop in that water and pray that it works)
by spacelattae
SYSTEM QUERY: can you [optimus prime] change the ending?R E L O A DSYSTEM QUERY: can you [orion pax] change the ending? —# In which the world is ending, and Optimus Prime has one chance to fix it all… by going back to where it started, a millennia ago. To the mech he once called friend (but that wor
The Brave Shall Heed The Call
by MlleMusketeer
Defeated and dragged back to the world he called home in chains, Megatron can do no more than endure. A rescue from Cybertron itself is almost impossible; he is forced to face the possibility that the Decepticon cause is lost, and that he will end his days as an Autobot experimental subject.Optimus'
Trust Me
by ChicoFeels
Hashtag yearns to connect more with Starscream and she can't stand at how the world doesn't want to give him a second chance. She also wishes he wasn't so hostile towards the world. Her solution? To welcome Starscream into the Malto family as a new uncle and shower him with the love and support he n
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Why Read Epic MegOp Fics?
Epic-length MegOp fanfics — over 100,000 words — are the format of choice for readers who want full novelistic immersion. These are the works people talk about for years, the ones with their own subreddits and tag clusters on AO3.
Many of the most beloved MegOp fics in the fandom land in this range, because the slow build of trust, conflict, and resolution that defines the pairing needs room to breathe. Set aside a weekend (or several) and dig in.
About This List
This list of 6epic MegOp fanfics spans 867,975 total words. Kudos range from 3,469 on the newest entries to 6,228 on the most established. 50% are marked complete — check the status flag before committing to a longfic. The most common rating is Explicit (4 of 6 fics).
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