This story is a sequel to Iron Hearts: Book 1 - Planetfall

An MLP/Warhammer 40K Crossover, part 2.

Celestia has handed down her order. The Iron Warriors must be defeated and driven from the planet, lest the corrosive grip of Chaos infect their world. With great reluctance, Twilight and Company depart for the Iron Warriors fortress-factory in order to confront the Chaos Warsmith. However, in this mission it is not the might of the enemy that will be their greatest challenge, but their own burgeoning friendships with the admittedly less-than-saintly members of the 38th Company.
At least until the Iron Warriors actually consider them a threat. Then it's totally their military might that will prove to be their greatest challenge.
All the while, the Tau forces lick their wounds and plot their next move. They are far from defeated, and the Iron Warriors have little inkling as to the aliens' true purpose.

MORE EXPLOSIONS!!

(Dark humor warning; minor grimdark)
(Cover art by Nicholas Kay)
(This series now has its own TVtropes page!)
(This series is a contestant in the Tournament of Canterlot, a charity event to raise money for Syrian refugees! Go here for details and donations!)

An MLP/Warhammer 40K Crossover

The Iron Warriors 38th Company has landed in Equestria, entrenching themselves like a barbed hook. They hunt the aliens of the Tau Empire, intent on destruction and pillage.
A small squad is dispatched on a reconnaissance mission, only to find that there is intelligent life on this world besides the feuding space-farers.
Will these improbably adorable and friendly equine aliens turn the damned warriors of Chaos from their blood-soaked path, cleansing them of their dark legacy with the magic of friendship and harmony?

No.
No, that isn't happening.
EXPLOSIONS!!

(Dark humor warning; limited grimdark themes)
(Cover art by Nicholas Kay)
(This series now has its own TVtropes page!)
(This story is a contestant in the Tournament of Canterlot, a charity event to raise money for Syrian refugees! Go here for details and donations!)
(Featured on Equestria Daily 8/20/15 )

Anon has a mare problem. A big mare problem. During the day, they treat him just fine. However, when night falls... that's where their inner desires rise to the surface and attempt to take Anon by force.

Note: A parody many horror games, including Five Nights at Freddies and SCP Containment Breach.

Commander Shepard remembers firing the crucible. She remembers she had to make an important choice. She remembers good friends, a lover, and plenty of loyal crewmen.

She just can't remember what her choice was. What the threat she was striving so hard to end was. Or what the faces of the most important people in her life look like.

She also has no idea how she wound up in the monster filled forest she's come to call home for the past eight months. Or how she picked up a snarky A.I. making its home in her omni-tool.

Two hundred years have passed since the discovery of the purveyor and the events set in motion by Celestia's endeavor to save her own world. Now, the purveyor has returned from the void and their world will change, for the better... or for the worse.

This is the sequel to The Watcher, it is advised to read it before reading this.

A big thanks to Lord Destrustor for editing. Go check out his work, his stories are definitely worth your attention!

Subject Delta, an Alpha Series Big Daddy, has been through a lot in his life. But this is his last stand, he and his Daughter Eleanor are going to escape from Rapture. The Pairbonding destroyed, his body tired from all the fighting ... Subject Delta won't live to see the world beyond Rapture. The ending coming near, he finds himself escaping Rapture ... to only awake in a stranger place. Will Equestria be able to handle Subject Delta?

--Crossover with BioShock 2--

Author's Note: First, criticism is highly appreciated. Second, this isn't my first fanfic rodeo, but it's the first time in English. Errors will ensue, so feel free to correct me! Third, I hope you enjoy the story!

Copyright: My Little Pony: Friendship is Magic (Hasbro), BioShock 2 (2K Games), Cover Image (The BioShock Wiki).

Tags: Crossover, Alternate Universe, Human, Dark. --Will be updated--

Characters: Subject Delta, Eleanor Lamb, Sofia Lamb, The Family, Twilight Sparkle, Spike, Rarity, Applejack, Rainbow Dash, Fluttershy, Pinkie Pie, Princess Celestia, Princess Luna, Augustus Sinclair, Yi Suchong, Andrew Ryan, Shadow Stalker. --Will be updated--

Isolated from her friends and taken prisoner in the middle of a war, Twilight must deal with the very real dangers of being percieved as an enemy as well as the nightmares of her arrival on 'Earth'. Can she overcome her own fears and the fears of her captors? Will the wayward unicorn's assistance be a boon or a curse to the 'humans?' Most importantly, will she ever find her way home?

"In short, it's a story of friendship and plasma rifles, with the emphasis on the friendship. The characters are well written, the XCOM setting is fleshed out very well, and the story is compelling. If you love XCOM, you'll love the story, but even if you've never heard of it, it's more than worth giving the first 3 chapters a read.

There's excellent action later on, but the real strength lies in the collision between the friendly and naive world of Twilight Sparkle and the desperate world of humans fighting a losing war for survival and willing to do anything to turn the tide."

--Arzoo

(XCOM/FiM crossover)
(Cover art commissioned by a friend and created by the magnificent FoxInShadow!)
(Original cover art by the amazing Carnelian can be viewed here!)
(Gore tag for blood and some violence)
(Many thanks to the studius OminousTen, Arzoo, xXFluttershyForeverXx and finally Setokaiva for giving my rambles a once-over)
(Now with it's own TV Tropes page! Get to tropin' folks!)

A creature of old has been present in Equestria since the beginning of the rule of the alicorns, watching, waiting. He saw their fall and the sisters' rise to power. Now, for the first time in eons, he steps from watching and takes action.

Stranded on a hostile, alien world, Twilight Sparkle and Rainbow Dash must depend on one another and a fellow alien castaway if they want to return home to Equestria.(originally published on FFN)

Following his tumultuous defeat, King Sombra is flung across space and time to exit out a human's malfunctioning toaster. For weeks, Sombra monologues his revenge to destroy those that hurt him. But seven months later, when a route back to Equestria is found, does he not seem all that interested in returning.

Edited by spigo.

Prequel: The Roommate From Tartarus
Side Sequel: (Not My) Home Sweet Home

Update: labelled as complete. The last three chapters will remain as bonus chapters.