On July 17th, 2023, satellites around the world began to pick up a strange radiation source coming from the North Pacific, just above Hawaii. Just as the US, Japan, Australia and other such nations along the Pacific begin to investigate, something covers the entire North Pacific in blinding light, a loud crack rippling through the air. When the light finally died down and humanity rubbed it's eyes in shock, they saw none other than Equestria.

The first contact had gone well enough, with pony and human delegations meeting in New York, Celestia herself showing up for a moment. They claimed that the appearance of Equestria was purely accidental, a 'magical mishap' as they put it. They established 'Conversion Bureaus' around the globe, establishments for the sole purpose of permanently changing a human into a pony.

As it turned out, this was all a ruse. Shortly after the final conversion bureau was built, Celestia herself declared humanity to be a 'vile' and 'unfit' species, citing examples such as their wars, their pollution, and so on. All at once, the Conversion Centers released hordes of Pegasi and Unicorns, bent on forcibly turning all of humanity into 'peace-loving' ponies.

All at once, millions of humans were transformed. Military bases sabotaged. The world couldn't even get a missile out of the ground in time, much less perform a coordinated counter-assault. Humanity simply wasn't prepared for this.

But as it turned out, there were other players in the game. Humanity had gotten out of fixes much worse than this before, and they didn't even realize it. Organizations, unknown to even the world elite, sat beneath the surface of the Earth or disguised as ordinary facilities, prepared to do everything in their power to prevent the extinction of humanity.

As humanity panics, the SCP Foundation takes action.

THIS STORY IS A CROSSOVER WITH MY LITTLE PONY: FRIENDSHIP IS MAGIC AND THE SCP FOUNDATION.

THE SCP FOUNDATION MYTHOS IS A COLLABORATIVE WRITING SITE CONTAINING THOUSANDS OF USER-SUBMITTED ARTICLES DESCRIBING FICTIONAL, ANOMALOUS OBJECTS AND ENTITIES.

I DO NOT OWN MY LITTLE PONY: FRIENDSHIP IS MAGIC, NOR DO I OWN THE SCP FOUNDATION. ALL RIGHTS RESERVED.

Lazy Pines is a small town in the high country of Colorado, easily overshadowed by the bigger sights to see along Colorado State 9. When influenza strikes the town hard, it is little more than a statistical blip in a typical flu season. No one thinks any more of it as the initial wave of infection passes ... until the other symptoms begin to manifest.

Meanwhile, during what should have been a routine trip to Canterlot, Twilight Sparkle stumbles upon a strange anomaly which turns into an all-consuming mystery. As she discovers the complex web of magic stubbornly maintaining this mystery's secrets, she grows worried what it could mean for herself and her family.

And as the residents of Lazy Pines struggle to understand -- or even believe -- what is happening to them, two worlds have irrevocably been set on a direct collision course.

Updates every other weekend.

Cover art by Mix-up. Please check out more artwork by this talented artist.

Now has its own TV Tropes page thanks to redandready45.

The Conversion Bureau never made any sense anyway, but here are some places where it would have made less sense.
Not necessarily worlds where the ponies would lose the fight - just worlds where conversion wouldn't logically work.

Before suggesting a World, read the index to make sure I haven't done it already.

The Barrier: a naturally-occurring wave of magic that formed soon after the portal to Equestria appeared somewhere in the South Pacific, enveloping Earth with an inevitable tide that has destroyed all life on the planet, all despite the best efforts of man and pony alike. Now, the ponies are left to pick up the pieces and try to preserve what's left, while averting the vacant gazes of the mindless Newfoals left from one of their failed attempts to save what they could.

But there's one thing that all seem to have forgotten, from the ponies of Equestria to the strange multitudes of species in the universe with their sights set on Earth: and it's that you can't keep a good apex predator down. You can only hold them up a little while...

Special thanks to The Footsoldier for the OC, Elisa!

"If fighting is sure to result in victory, then you must fight!" - Sun Tzu

With war on Equestrians on the horizon; nine hired guns, alongside a new one, are sent to seek and destroy behind enemy lines. A Team Fortress 2 crossover story with bureau background
Read the adventurous tale of how a group of ten men changed the face of the war, changed the lives of national heroes, and created the foundation for the days post war for said enemy nation.

First story on fimfic. Started as an idea I had to write down.

Jacob Sanders was able to escape his forced conversion with the help of his resistance leader friend, Hudd. Their group is now on the run and a primary target to the ponies. In the 12 years they've been on Earth, the genocidal ponies have converted most of the human population. With hardly any humans left, what chance do they have against the forced conversion?

(Sequel to TCB: New Tactics. ) ***Contains Language and Xenolestia***

September 7th, 1986. Equestria arrives on Earth and declares humanity 'evil' and 'unfit'.

September 16th, 1986. Talks between the races begin.

Quickly, the Soviet Union and the United States are forced to join forces to save humanity.

For some of the humans this could be a godsend. For many, however, they know what they have to fight for.

The humans know that they can only win together, and they will have to unite in order to prevail.

A/N: This fic will mostly be pro-human rather than pro-conversion.

After 12 long years of conversion movements, Princess Celestia has finally fallen to a small group of human resistance. Now the humans have the means to increase their numbers and have the chance to reclaim their lands. But they will soon learn how extensive Celestia's dark dealings are.

Sequel to The Conversion Bureau: New Tactics and New Tactics Part II Don't forget to thumbs it up if you liked it and want more.

*Anti-TCB story with Xenoponies*

The Earth is still reeling from the effects of the Collision Wars against Xenolestia and her hordes of Newfoals, humanity having emerged victorious but a few million citizens fewer. Then yet another Equestria appears, but this time the humans are quick to cut off the head of the snake, capturing the evil Princess Celestia and imprisoning her. But something seems different about this Celestia...something almost friendly.

Can the Harmony and Friendship that Celestia has treasured all her life heal some of the scars left by her wicked counterpart, or do some wounds just run too deep?

Cover modified with permission from: KP-Shadowsquirrel

Also, because people have been asking for it, the original WW2 poster can be found here

Pre reading done by DJK. So go give him some wuv.