Getting a college roommate is random chance.
Sometimes you get lucky, and sometimes you get a pony.

Rainbow Dash enrolls at an Earth university.

Update: and then some other stuff happens.

Beyond Earth and beyond the Universe within which Earth exists there is a place full of love; the richest mine of love that can be found, as it is seen by those capable of utilizing it...

Within that place, specifically a part of it called the Everfree Forest, awakes one such creature: a Changeling; specifically, a Changeling who had been a human on Earth the day before. How will he survive in a body that literally needs love for nourishment, while in a world that is now wise to the Changelings' tricks and has branded them evil? Better question: Will he be able to change more than his physical appearance?

These questions are not the only thing that will plague him, for the hows and whys of his arrival and transformation are in a hurry to reveal themselves, and Equestria's heart will stop as it waits for its fate to be decided.

Now with a side story (with more to come) from other characters' POV!
POV: MANE SIX

Shining Armor and Cadence's spell reveals something completely unexpected as it expels Chrysalis and her changelings out of Canterlot: A secret kept from everypony for several years...

Now with a TV Tropes page! Warning: Will Contain spoilers.

This is a realistic view on how shipping would actually happen in the show. Almost every pony has been shipped with everypony else, but this is what would actually happen if two ponies ever attempted at a relationship.

...

No offense to any shippers, even though you shouldn't take any. If anypony would like to see any other shippings done on this fic, just leave a comment. Maybe I'll write it if I feel like it.

Twilight finds a dusty old book full of puns and begins to use them, much to the dismay of her friends, considering her puns are slowing down their travels and they need to be PUNCTUAL.

Seriously, a lot.

(Now with a Spanish translation by the generous SPANIARD KIWI!)

Luna has had enough of Celestia's games, and has found the perfect means of revenge. Using a long-forbidden spell, she transforms her sister into little more than a small filly, all so she could pull the greatest prank ever. Unfortunately, she soon learns that before you fool around with dangerous magic, you really need to read the fine print...

A sequel can be found here.

A strange high speed invader comes to the land of Equestria and befriends the mane 6.

Pinkie Pie has an existential crisis while painting her room. This self-parody is dedicated to Professor Piggy, who once told me that I could write a story about Pinkie watching paint dry and weave it into an incredible psychological journey. Let's see if he was right.

Featured on Equestria Daily.

Dramatic reading by MicTheMicrophoneZero.

Cover art by chaosdrop.

"Would you tell anypony if you knew the world was going to end, Twilight Sparkle?"