This story is a sequel to Cold

Time flows differently, in the multitude of plains that make up the universe. Seconds here can be hours there... and hours here can be decades over there. There is, however, one universal constant among all time and space: Time never stops. Perhaps I counted on time as my ally when I cast that spell and dove into the past... if only I'd know just how cruel and unwavering it can really be.

Thirty years, I've tried... in most other worlds, it's probably been hundreds, but I've managed to keep track. Thirty years of searching, trying and trying again, desperately doing everything in my power to bring you back... and all that I've learned is that unless I make this choice, it's simply not possible... I hope you'll forgive me. I know that'll be hard... but maybe given enough time, you'll understand... -Twilight Sparkle

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Now with a SEQUEL!!

An unexpected event happened in Crystal Empire and quickly spread all over Equestria. Unfortunately, the same thing happened to the youngest ranger in the Army Ranger.

When he and his friends are sent to Afghanistan to fight alongside each other and their main objective is to capture one of the ISIS base in a town, they suddenly got teleported into the 'beautiful' land of Equestria, where they met with colorful talking ponies. But everything didn't seem as beautiful as it looks like.

The rangers now are going to fight with a villain that his mission is to conquer Equestria. Luckily for them, they have technology far more advanced to fight the evil one. So, nothing could go absolutely wrong right? I hope so.

Rated T because contains hard languages.

(Undergoing edited)

This story is a sequel to The God Empress of Ponykind

A message rings through the Warp: "The Game is broken, only Destruction remains". Celestia hears it, fearing for the lives of her former subjects and those of her beloved ponies. Unwilling to sit idle, she has chosen a dangerous path: return to the Imperium, take up the mantle of Emperor of Mankind, defeat the coming storm, and save Mankind once and for all.

With Twilight Sparkle to aid her, Celestia faces new challenges and new enemies. Her forces are scattered, her people assaulted, and the enemies of Man grow stronger with each passing day.

The Time of Heroes is gone. Now comes the Time of Ending.

Sequel to God Empress of Ponykind. Reading that first is strongly recommended.
Rated T for 40K related violence, but that might change at some point.
Comments contain spoilers. You have been warned.

This story is a sequel to The God Empress of Ponykind

One thousand years ago, Luna, Warmistress of Equestria and sister of Empress Celestia, fell to the powers of Chaos and plunged Equestria into a brutal civil war. The Traitors were defeated, but not before Luna made the ultimate sacrifice and was sealed away in the Immaterium with only the soul of a slain Primarch to keep her company. For a millennium she has been locked away, waiting for a chance to return to her home and her sister.

Now, she has been freed from the Immaterium, and as she takes her first steps in a new Equestria, one ruled by the powers of Harmony, only one question remains:

Does Equestria still need the services of a Warmistress?

Comments may contain spoilers. YOU HAVE BEEN WARNED!

Also Tropes. Please contribute.

Princess Celestia: Goddess of the Sun, ruler of Equestria, beloved Princess of ponies. She is loved by all, and loves all in return. A calm and wise ruler, she sits on the throne in Canterlot, maintaining peace and harmony throughout the land.

What most don't know is that her past is much darker: She was once a commander of legions, a warrior and scientist of unmatched skill. Thousands of monsters and abominations fell to her forces, slain in the name of an old leader, one entombed within his own throne. Free of her old form, free of the powers of Chaos, she was cast into a new realm, in a new form, with a new lease on life.

She is the God Emperor, Eternal Ruler of Equestria and Lord of the Imperium of Man.

Has a TvTropes Page. Please contribute.

Comments contain spoilers. YOU HAVE BEEN WARNED!!!

For the past several weeks, Twilight and Starlight have been working on a secret project that they refuse to elaborate on with their friends. Only that it might change how they view the universe.

When the girls, and even the princesses, finally get to see what exactly the two have been working on, it's not what they expected. But what they hear on it will leave its mark on them.

Across the universe, a world is dying. And Twilight and her friends will hear its message.

This story is a sequel to Entrenchment

An Age of Iron story.

At last, Ferrous Dominus is (mostly) secure.
Centaur III has been (largely) pacified.
The enemies of Chaos and Equestria have finally been crushed (probably).

But victory is merely a prelude to the next war. The Imperium of Man and the pitiful, far-flung holdings of the alien await the Iron Warriors and their new allies, ripe for conquest and plunder. With a new home world and a new ally under their thumb, the 38th Company at last turns its attention on a galaxy ablaze with constant war, seeking new victims to fill the bellies of their ships. The gentle but resourceful equines of Equestria travel with them, taking to the field not out of malice or avarice but gratitude in at last fulfilling their grave debt to the Legion.

But in the depths of the void, far beyond the fleet, beyond the veil of the Materium itself, Chaos is not idle. Plots advance, blood spills, and ancient evils seethe.

The light will be extinguished.

(Dark humor warning; grimdark themes)
(Cover art, and pretty much the rest of the art too, by EZTP)

This story is a sequel to Entrenchment

Boarding actions are often frantic, desperate assaults. Men are launched directly into the greatest bastions of the enemy while guns that can level city blocks roar around them. Boarding soldiers are swarmed in minutes by all manner of defenses and opponents, trying to wreak what havoc they can within a vessel's belly before they're overwhelmed and extinguished. Incoming fire from their own ships continue to pound away at their target the entire time. Depressurization, incineration, and rad-flensing are all common ends to the life of the boarding trooper, and as often as not their death comes as a result of their own sabotage.

Pity these courageous souls who take their weapons to the hearts of giants.

(Dark humor warning; grimdark themes)
(Cover art by EZTP)
(Featured on 8/4/2019!)

This story is a sequel to Iron Hearts: Book 5 - Suffer Not the Alien to Live

An Age of Iron story.

Months have passed since the destruction of the Ork Space Hulk and the end of the war against the Waaagh that threatened to swallow the Centaur system and all its inhabitants.
The Iron Warriors' 38th Company is the absolute military power on the planet, and the survivors of the Lamman Sept and the ponies of Equestria stand with this mighty army of Chaos as they claim Centaur III as their own. Although the other nations of their world may not fully recognize the Company's dominance, it is no matter; the Iron Warriors make plans to return their cargo to the Eye of Terror and return to their eternal trade of piracy. The planet is secure, and can be shrouded by Warp storms at their whim. The natives are divided, weak, and anyway occupied fighting off the scattered Ork warbands. The military supremacy of Chaos is unchallenged, and bolstered by Equestria's reluctant, but hard-earned support.
As Ferrous Dominus expands its operations and the fleet performs its long-suffered duty, it seems nothing can stop the Iron Warriors and their equine allies. The denizens of this conflicted world start to hope that at last peace - if not a distinctly unstable and militaristic peace - has come, and they might start constructing a new, better future from the ruins of war.
But hope... is the first step on the road to disappointment.

(Dark humor warning; limited grimdark themes)
(Cover art by EZTP)
(Featured on 9/19/2015)

This story is a sequel to Iron Hearts: Book 4 - Emerald Dawn

An MLP/Warhammer 40K crossover, part 5.

With their plan established and put into motion, the 38th Company begins the long and unwieldy task of planetary defense, fueling the arcane energies that may yet unsteady the Empyrean and spare their fleet from an enemy without number or mercy. The inhabitants of Centaur III and even the abandoned aggressors help where they are able, but as their foes grow in number and destruction spreads across the planet, the war for the Centaur system has become a bloody race against time.
All the while, the grim culture of the Chaos marauders continues to mingle with the enlightened benevolence of their equine allies. Tempers fray and allegiances blur. But the die has been cast: Equestria and the Company will survive together, or be snuffed out together.
And even should they succeed, what future awaits these unlikeliest of friends?
For there is no peace among the stars. Only an eternity of carnage and slaughter, and the laughter of thirsting gods.

ALL THE EXPLOSIONS. JUST, ALL OF THEM.

(Cover art by Ahrimatt)
(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!)