(CJ)Cave Johnson here, (TW)Twilight Sparkle here, (CJ)and we will be testing the least safe parts of science possible! First, we're going to see if we can turn Scootaloo into a chicken! (TW)For science! (CJ)Yes yes, for science! Then we will see if Applejack can survive if we replace her apple trees with combustible lemon trees! And last but not least, you all might have wondered, what happens when you give Pinkie Pie coffee? Well, we're about to find out! (TW)For science! And many more! The possibilities are endless!

No, I'm serious. Twilight does not become an alicorn in this story. She might get a little irate about that, depending on what happens with her friends...

An army of Ursa Minors, led by the evil Ursa Major, bears down upon the united ponies of Equestria. Alone, these brave soldiers are helpless against the army of monstrous creatures, but with the help of Earth's greatest champion, they may just stand a chance of prevailing in the upcoming battle.

Based on the fantastic picture by Ponyshot

Note: The Colbert in this fic is based on the character, not the actor.

A TF2 crossover? Seriously, how many of these have shown up? Oh well, time for my effort.

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Equestria and Aquileon, the griffon's realm, have a long-standing agreement: Every five years, teams from each country will face each other in a competition to garner fame and glory for their home and for themselves. This year, the griffons have chosen war games, confident that they can steamroll the peace-loving Equestrians.
Princess Luna, determined to stop this from happening, pulls nine great warriors from their world to help Equestria and to train their representatives. But was this a good idea?

This is kinda... experimental. If this garners enough interest, then I shall continue it. Otherwise, I shall let it die quietly.
Also, if somepony can give me the source of the picture I'm using, I'd appreciate that immensely.

(Credit to Primogenitor34 for Cover-Art)
(Credit to smellyfeetyouhave and Thunder Blaze for the old cover-art)
(Now 20% CYOA... okay maybe a little more than that. Please use the [Continue] option to go from Chapter to Chapter. If you just want the straight up story, go green)

"It's going to be a long night..."

When a mansion appears out of nowhere in the outskirts of town, The Mane 6, are all invited to a housewarming by Specter Yield, the owner of the strange mansion. Hours after they leave to attend the party, the Cutie Mark Crusaders find themselves in this mansion. Eventually, Sweetie Belle finds herself alone in this massive mansion, trying to save her friends, and discovering the truth behind this haunted mansion. Will she be able to rescue her friends... and possibly all of Equestria from the ghostly presence?