Here is an index of Fan Works based on other fan works (thus implying a different author). Also called Recursive Fanfiction.
Note that these stories are, by force, also fan works of whatever work the title they're based on is a fan work of in the first place.
Works with their own sub-index:
Other Fan Works:
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Fan Fiction
The Assassination of Twilight Sparkle
All For Luz
Better Living Through Science and Ponies
Beyond the Outer Gate Lies...
The Calvinverse
Commanderverse
The Conversion Bureau
Doctor Whooves Adventures
Dungeon Keeper Ami
The End of Ends
Friendship is Optimal
Five Score, Divided by Four
Halkegenia Online
Harry Potter and the Methods of Rationality
In Flight
Unexplored Chronicles
It's (Not) Your Fault
The Karma of Lies
The Life and Times of a Winning Pony
Monster Girl Encyclopedia
My Brave Pony: Starfleet Magic
My Immortal
My Little Pony: Friendship Is Magic fanfics (various)
Past Sins
Pokémon Uranium
Pretty Cure Mirai ~ Spark!
Prisoner of Destiny
Queens of Mewni
The Rugrats Theory
Splint
A Throne of Bayonets
Two Letters
Unwanted Free Ugly Troll
All For Luz
Better Living Through Science and Ponies
Beyond the Outer Gate Lies...
The Calvinverse
Commanderverse
- Commander (Drich)
- Conquest in the Name of Advancement!
- Escalation Is The Name Of The Game
- Faith in Superior Firepower
- On a Backwater Planet, a Commander Builds a Metal Extractor
- Outside-Context Problem
- Reverse Engineering for Fun and Profit
- Rise Of The Steel Phoenix
- The Wandering
- When In Doubt, Blame the Eldar
The Conversion Bureau
- The Conversion Bureau: A Kinder World
- The Conversion Bureau: A New Age
- The Conversion Bureau: Cold War
- The Conversion Bureau: Not Alone
- The Conversion Bureau: The Other Side of the Spectrum
- The Conversion Bureau: Worlds Where It Wouldn't Work
- The Negotiations-verse
Doctor Whooves Adventures
Dungeon Keeper Ami
The End of Ends
Friendship is Optimal
- Friendship Is Optimal: Always Say No
- Friendship Is Optimal: Caelum Est Conterrens
- Friendship Is Optimal: The Law Offices of Artemis, Stella & Beat
- Let's Play: Equestria Online!
Five Score, Divided by Four
- Dark Horse — A Five Score Tale from the Dresden Files (crossover with My Little Pony: Friendship Is Magic and The Dresden Files)
Halkegenia Online
Harry Potter and the Methods of Rationality
In Flight
Unexplored Chronicles
It's (Not) Your Fault
The Karma of Lies
- Down the Karmic Hole
- Karma Overbalance
- Karma's a Bitch
- Karmic Backlash
- One More Try
- Tales of Karmic Lies Aftermath
- What Goes Around Comes Around
The Life and Times of a Winning Pony
Monster Girl Encyclopedia
My Brave Pony: Starfleet Magic
- Fall of Starfleet, Rebirth of Friendship
- My Brave Pony: Starfleet Nemesis
- Starfleet: Magic is Believing
- Starfleet Redone
My Immortal
My Little Pony: Friendship Is Magic fanfics (various)
Past Sins
Pokémon Uranium
- Ash and Serena's Atomic Odyssey (crossover with Pokémon the Series: XY)
Pretty Cure Mirai ~ Spark!
- Pretty Cure Mirai ~ Spark! (movie script)
Prisoner of Destiny
Queens of Mewni
The Rugrats Theory
Splint
A Throne of Bayonets
Two Letters
Unwanted Free Ugly Troll
Video Games
Five Nights at Fuckboy's
Friday Night Funkin' BE “TOO” Remixed
Friday Night Funkin' D-Sides
HoloFunk
Super Smash Bros. Crusade
Vs. Dave and Bambi
Friday Night Funkin' BE “TOO” Remixed
Friday Night Funkin' D-Sides
HoloFunk
Super Smash Bros. Crusade
Vs. Dave and Bambi
Web Animation
Webcomics
Web Videos