Don't believe everything that you're told. Question everything, believe nothing. The first moon landing that you learned about in school was all lies, the reality of the matter is very different...

(I can not stress enough the fact that this is [obviously] set in an Alternate Universe.)

((On Hiatus until further notice - I will not abandon this, I just need some time to brainstorm! I Pinkie-Promise!))

Special thanks to Fyrebird for pointing out many critical flaws and overlooked inaccuracies, and helping me correct them.

Credit for the cover art goes to No Name Brony on MyLittleBrony!

Twilight Sparkle thinks that Cheerilee would provide a very interesting partner... to talk to... about literature. Nothing else. Right?

Twilight becomes alicorn of the stars. This is sort of a problem, because Luna kind of already was alicorn of the stars. Oops!

TV Tropes

Octavia isn't the type of mare to mix up with suspicious crowds. She stays away from ponies who are different from herself, never giving them second thought, never considering the fact that they might be friendly.
But what happens if Octavia doesn't have a choice? What if she needs one of these uncouth ponies she so despises, and avoids at all costs? And mostly, what will her family say if she goes as far as to fall in love with one?

Rated teen for some minor sexual themes

This beautiful new cover pic is by the great and powerful (in my opinion) RainbowShy1241. A big huge thanks to you, because it's awesome!

[2nd Person story involving you and Octavia.] You're a pretty talented piano player, trained by your perfectionist of a father. The issue is that you grew up hating what you do so well. Octavia becomes rather fond of your talent and tries to show you there is something special in what you do. Your past might be a road block to your happy future though and it seems Octavia is willing to help you overcome it.

After Rainbow Dash's sudden disappearance and her subsequent discovery in the another world, the Princess and Twilight Sparkle must do all they can to restore the separation between Equestria and the human realm. All traces of Rainbow Dash's presence must be erased, no matter the cost. Her past life must be turned into a forgotten memory.

But can memories truly be forgotten? Can magic destroy fifteen years of experience and emotion? Or will Rainbow Dash be forced to exist with a dual history, the memories of two lives flowing through her mind?

And what of the human?

It is the year 2038, and the Earth is slowly being consumed by a space-borne monstrosity dubbed the Black Tide, which is using nanotechnology to remake the planet into something hideously alien.

Erin Olsen works for Project Harmonics, humanity's last-ditch effort to find a new world before the Tide can wipe them out. But when that world is found, and it turns out to be occupied, Erin will need to find the courage to face the unknown in order to save the inhabitants of both worlds.

(Many thanks to Easteu for the fantastic cover image for this story!)

Now with its own TV Tropes page

There is now a follow-up to this story: Sunflower - Side Projects
Sequel: Project Sunflower: Harmony

An experiment gone right has successfully left Rainbow Dash's rainbow mane in Twilight's vial. But when Pinkie stops by for a visit and mistakes the rainbow for a drink, she decides that all of her friends must try this amazing creation.

How can this go wrong?

Side effects, of course.

After an unknown accident Twilight Sparkle and Rainbow Dash awake to find themselves sharing the same body! Now they must struggle to hold themselves together as their world is turned upside down. How long can two ponies exist in a single mind? It’s a race against time as they search for answers before it’s too late. When all is said and done, you’ll never look at Twilight Dash the same way again.

[2nd Person]

You are the son of a wealthy sports store owner. One day during your walks a heavy thunderstorm rolls in. You stumble into a ravine, finding two small creatures lost in a world not their own.

You take in the two small foals, and try to help them to the best of your abilities.

Shamelessly inspired by My Little Dashie... Please don't hurt me...
First thing I show the public, so... be harsh!

Oh man, why is this so embarrassing...

Image is copyrighted to MadMax http://fav.me/d4p0am0