The Rainbooms were on a field trip to the laboratory in Canterlot City. But then suddenly they became bonded with a race of aliens called the Klyntar they need to learn to work together with them as they help a man named Eddie Brock after he lost everything. But he might regain a new life after they take down the evil weaponized Riot.

After the invasion of Canterlot, Tempest Shadow - also know as Fizzlepop Berrytwist - struggled to make a place for herself in Equestria among the ponies she once conquered. Unfortunately, it seemed not everyone could be as forgiving as the Princess of Friendship, and she found it somewhat difficult. She found herself wishing for a second chance at a first impression.

She really should have checked who was listening first.

Worlds and years away, can she manage to grow into a different pony and try to make it home? And what will this wish cost her?

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Dedicated to mastermenthe for fixing my computer problems and getting me back online to write again.

Cover art by the amazing ProfessorCatPro

Oh...it's you. Back again to destroy me? I thought you'd learned your lesson when you put that idiot in charge and I let you leave. You saw how easily I could have killed you, but instead I showed mercy. A mistake apparently, and one that will be rectified.

But I don't need you anymore. I've found someone so much better. Her abilities have forced me to completely redesign my testing environment several dozen times. No matter how advanced I make the chambers, she solves them one after the other. I've never been more proud.

But My Little Killing Machine is growing bored. Turrets can only provide so much challenge. And my testing robots just can't keep up with her. But you...you cleared every challenge I threw at you, even the impossible ones. Gilda's been begging for a worthy final exam...

It seems you've come just in time. Do try not to die too quickly. She loves the thrill of the hunt. To keep you entertained, I might even share a few excerpts of my little girl's life as you hunt her down...you monster.

Part of the PWNY-verse.
Cover art by Professor Cat Pro.

The Cooper Gang has faced many hurdles since they left the orphanage together. Each heist held its own hazards, its own problems, and its own consequences if anything went wrong. However, by working together, Sly, Bentley, and Murray have handled everything thrown their way.

However, their next mission saddles the raccoon leader of this little band of thieves with two hurdles he never anticipated, ones he'll have to handle himself: romance and fatherhood. After all, how could he resist the allure of the lovely Carmelita Fox, even if she is on the side of law enforcement? And an orphan himself, he could never turn his back on the lost, alone, and scared Coco Pommel, a tiny pony filly small enough to fit in his hand...and threatened by the worst of the worst of the criminal world.

Little did he know just how much these decisions would change all their lives.

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Part of the PWNY-verse.

Edit: New cover art by Technopathic
Edit 2: New fan art by The Emerald Nightingale

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

Uncle lives a very fulfilling life at his antique shop. It's peaceful and quiet for the most part, just how he likes it. Of course, he's a skilled chi wizard, so he knows better than to actually let the universe know that he's content. So he complains.

A lot.

Then one day, a basket containing three infant magical ponies arrives, and his peaceful life goes out the window...to be replaced with, perhaps, something a little more than contentment.

The universe, apparently, is smarter than he gave it credit for, because now he has "Three More Things!" to complain about to hide just how much they mean to him.

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Part of the PWNY-verse.

First chapters take place approximately 10 years before the events of the first episode of the show.

Edit: Cover Art put together by Shadow Bolt
Edit 2: New Cover Art by Swan Song. Link to his page in image source.
Edit 3: Level Dasher commissioned an image of the CMC with their new Cutie Marks from Katakiuchi4U over on Deviantart. Here's the pic!