Something has happened and Twilight finds herself in a strange and dark new world. The Bipeds here have strange magic, advanced technology, and a lot of problems. She needs a few friends, and they just might need her. WORM crossover. Deadpan29 has created some great supplementary material that is canon to the story.

When Wreck-it-Ralph finds a villain character who seems to have gone Turbo, he finds more than a handful in the handful sized sprite.
For one thing, she has no idea what game she comes from.
For another, her code seems completely foreign to the Arcade.
For a third...she's absolutely adorable.
Having only just finished cleaning up after King Candy's mess, this little Nightmare could be a problem...or the greatest blessing Ralph has ever received.
And shadows from the past move behind the scenes...

Part of the PWNY-verse.

Edit: Now with cover art by KittyCoverArt.
Edit: Now with fan art at the end of the first chapter.

When a dark enemy begins hunting the young wizard Twilight Sparkle, the walls of the fortress library of Candlekeep cannot protect her. Not even her mentor, the archmage Star Swirl the Bearded, can keep her safe. With a price on her head and the shadow of death on her heels, her only hope for salvation is the Magic of Friendship. Perhaps, with powerful allies at her side, she can find answers and uncover the truth about her destiny.

(This story is inspired by the Baldur's Gate CRPG series by Bioware, but you do not have to be familiar with BG to understand its events)

Featured on Equestria Daily
Cover by Bluest Ayemel
"I love this fic. Keep it up!" – Sethisto (on the EQD page)
"From it's fantastic character development of Twilight and fast pace and exciting action, The Sword Coast is an excellently written and well thought-out story." – Amy Clockwork

Side stories: Tales of the Sword Coast
Sequel: Shadows of the Crystal Empire
Warning: Comments contain spoilers. Proceed at your own risk.

I was just hoping to get this last job done, always getting sent to this dimension or that, always doing the interests of others. Unfortunately, everyone's luck eventually runs out, and it looks like mine has ran out as well. Now somehow I got stuck in this place, in a foreign body, and things just keeps getting worse for me. What did I do to deserve this?
Note: This is not a HiE story.
Editors: Discord Kantus (Chapters I-XLII), Hyari (Chapters XXXIV and onward), Fourpony
Art: AlicornParty

It could have been just another night. Instead, Vinyl Scratch leaves a show to find herself suddenly presented with a chance to make a difference in the life of a filly no one else will look twice at. Now if only she can convince Octavia she's not making a huge mistake...as usual.

Note: This story now has an indirect sequel set several years in the future in The Most Unlikely Places. Cover art by SonicDash777.

During her entrance exam, Twilight's powers goes far out of control, leaving Celestia a shell of herself and Equestria in ruins. Now Nightmare Moon is free, but even she can't stop the Tyrant Filly. She flees through time and space, finding herself in an Equestria familiar to us but odd to her. Can the Mane Six help her stop a Twilight out of control?

Fanfiction.net link here!
Weekly featured fic in Authors Helping Authors group

TV Tropes Page, with sincere thanks to DrTempo.

Cover art from here.

Mood Wings - Observations on Pegasus Body Language.

When Twilight Sparkle finds this book, she discovers an entirely new field of research. The secrets of pegasus wings lie before her, and she insists on making her own observations on the matter.

How?

Field research, of course.

Celestia has a dangerous creature held in the deepest of Canterlot's high-security dungeons. It can create ponies (with full backgrounds and histories) with it's strange and often-times prophetic powers. The Princess does her best to keep it under wraps, but its only a matter of time before it's "creativity" will get out of control.

The star system Omega Centauri was just another oddity on a map to scientists in the not too distant future. However when they found the star was orbiting an earth-sized, earth-like planet instead of a black hole as its motion had suggested, a mission was scrambled to investigate this most unusual of celestial behaviors.

Hamstrung by politics, and nearly crippled before it began, the 'Lone Ranger' mission was reduced to just one crew member and left to his own devices.

These are the logs of Arrow 18 and its lone commander. This information is classified TOP SECRET by the Global Space Agency.

Do NOT tell the princess.

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.