MLP/Undertale crossover.
Not a PWNY-verse story.

Long ago, the Monsters and Humans fought a great war. The Monsters lost, and were sealed in the Underground. It would take the power of seven human souls to break the barrier that kept them imprisoned. They only had six. And so the Monsters waited and hoped, praying that another human would find their way to the Underground. Some thought the seventh soul would give their King the strength to break the barrier. Some dreamed of a human who would be their friend, and save them all...or had nightmares of one who would bring back the war.

...but nobody came.

...but somepony did.

Eons after the war, with no way to tell how much time had passed above, a tiny blue filly with wings and horn fell into the underground, calling for her Mama. None knew the poor creature's nature or origins...but her soul was powerful with magic, even more so than a human soul.

None can know what will come...of this little 'Woona'.

Cover art by Sanyo21

Red Team had been given an assignment. It wasn't the usual sort of assignment. They were assigned to defend their base 'until further notice'...and then never received notice. All announcements sounded pre-recorded, and enemy assaults were few and far between. The enforced inactivity was slowly fraying the bonds of the team...

...until something unexpected arrived. A tiny creature appears one day in their fortress, in need of compassion and care. Somehow, she finds that in this group of strange individuals, as she becomes their baby.

-------------------
Crossover with Team Fortress 2.
Part of the PWNY-verse.

Edit: Since I get these comments a lot, I will say here, I've never played the game and don't intend to include much in the way of game mechanics, so please don't suggest such things.

Edit 2: FAN ART! for chapter 9 by G_Haze. Makes me so happy.
Edit 3: More fan art from G_Haze, This guy's amazing!
Edit 4: New fan art! by The Pyromanecer. Thanks so much!
Edit 5: More fan art by shiningkord98.
Edit 6: New Fan Art by The Pyromancer
Edit 6: More awesome fan art from G_Haze! So awesome!
Edit 7: New fan art by Pioneering Author

It was just supposed to be a prank in the form of a game, but Discord accidentally turns the mane 6 into animatronic versions of themselves. Will the group ever coup with their new body's until they find a way to get their original body's back, or will they be stuck as animatronics for good?

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.

4 friends named; Miu, Koko, Dust and Aura are teleported to another dimension by an inter dimensional being. They are each alone, separated by dark hallways and guards pursuing them, they wake in the middle of a containment breach with powers they never used to have. They must find each other to get back to equestria but guards and monsters stand in their paths.

This is based on the game containment breach although it is taken from the SCP's perspective. The 4 friends will each play an SCP although they will play as their own rather than one of the original ones. Some original SCP's from the game will be used, this includes SCP-173 (the sculpture), SCP-106 (the old man), SCP-079 (the computer thingi magig that causes the containment breach (i assume)) although this one will be used vaguely, SCP-096 (humanoid creature that wont allow you to see the face of), SCP-682 (the giant lizard), SCP-914 (the refinery machine) and SCP-409 (the crystals).

This is my first fan-fic so please don't be too critical although some advise would be appreciated.

One day in Minecraft, a lone Enderman walks into an abandoned castle and finds an old enchantment book. After reading the text, he winds up in the colorful land of Equestria. Now he must learn to live with the inhabitants and learn the magic of friendship. Little does he know that a long lost evil has returned for revenge.

My Little Pony: Friendship is Magic is owned by HASBRO*
Minecraft is owned by MOJANG*

Shadow is a genetically engineered xenomorph who lost everything. His hive was destroyed and he was tricked into going into trap that was to get him off the ship he stowed away on. He crash lands on an unknown world and sees an opportunity to finally live without the worry of WY. When he discovers a small cottage and discovers that there isn't a human living in it but a talking pony, his life flips upside down. These creatures treat him nicer than the humans and he vows to not let WY step foot on this planet. He will start his own hive and hope to find a way to have his species strive once more. Will he succeed or will he be captured and experimented on?

Please do check out the Reading List by Lance Omikron to navigate the Amalgam Universe most clearly

A massive war of titanic forces is taking place in the Kaiju's world. However, when two faction's leaders, the current Godzilla and his 'brother' Xenilla duke it out; humanity unleashes its most devastating weapon. Something beyond comprehension occurred and the boundary that divides worlds, if only for the briefest of moments, was torn to shreds. New forms are taken, new bodies assumed. But old hatreds die hard. But how well can hatreds continue in the world of love and tolerance? Especially with its own demons follow it there?

Godzilla Franchise by Toho Company Ltd.
My Little Pony is owned by Hasbro Studios.
This is a non profit fan-work and I claim no ownership on the IP itself.
Story created by Tarbtano
Co-created and Contributed by Faith-Wolff and Skylark8756

HOLY SHEETZU WE GOT FEATURED! THANKS GUYS!
6/27/2014
Now on TV tropes (Thanks Raidrik, VampyGirl; Lance Omikron, Ultimomant, and ZimFan!)

Kaiju Cast:

Godzilla a.k.a Gojira
Xenilla
Mothra
Anguirus
Rodan
Destroyah

[Character copyright of Toho and Daiei Company, artwork property of Matt Frank]

(for any G-fans, Xenilla is the kaiju you may know as Spacegodzilla. I changed the name because I got quirked about typing it repeatedly and am writing the story so it can at least be understood by just an MLP or just a G-fan; and thought it get very confusing that one character's name was just another character's name with an adjective. Also... don't pretend it's the most imaginative name Toho has every made)