This story is a sequel to Stardust

When Equestria’s newest member of royalty asks for aid to be offered to her friends from abroad, the best and the brightest volunteer to serve. Captain Steel Song of the Dusk Guard are immediately mobilized to help XCOM defend their world from the enemies that besiege them. However, their first joint operation with the humans takes a turn for the worse and they quickly find themselves fighting for their lives against the full force of the monsters that threaten Earth.

(Stardust/Dusk Guard crossover)
(Coverart provided by a friend of Viking ZX!)
(While familiarity with both stories isn’t required, it is recommended)
(Many thanks to Arzoo for pre-reading!)
(All screenshots can be found at XCOM.wikia.com)
(Featured on 3/13/2013. Thanks everyone!)
(Now has it's own section on TVTropes as part of the Stardust series!)

This story is a sequel to Stardust

Twilight has finally returned home from the harrowing challenge that Discord set upon her, and the residents of Ponyville and the Elements especially look forward to having their dear friend returned to them.

Twilight, however, has changed. Still suffering from her injuries, almost incapable of using magic and haunted by the memories of her time on Earth, she becomes increasingly withdrawn from those who were closest to her. Will her frustration at her current state and her friends inability to understand her experiences cost her what she valued most before Discord's bet?

(Sequel to Stardust, familiarity with this is recommended!)
(Proofread by Arzoo!)
(Coverart commission drawn by the amazing KairaAnix!)
(Crossover with XCOM: Enemy Within, though the crossover and human elements are minimal)
(Featured 4/28/2014, thanks folks!)

Isolated from her friends and taken prisoner in the middle of a war, Twilight must deal with the very real dangers of being percieved as an enemy as well as the nightmares of her arrival on 'Earth'. Can she overcome her own fears and the fears of her captors? Will the wayward unicorn's assistance be a boon or a curse to the 'humans?' Most importantly, will she ever find her way home?

"In short, it's a story of friendship and plasma rifles, with the emphasis on the friendship. The characters are well written, the XCOM setting is fleshed out very well, and the story is compelling. If you love XCOM, you'll love the story, but even if you've never heard of it, it's more than worth giving the first 3 chapters a read.

There's excellent action later on, but the real strength lies in the collision between the friendly and naive world of Twilight Sparkle and the desperate world of humans fighting a losing war for survival and willing to do anything to turn the tide."

--Arzoo

(XCOM/FiM crossover)
(Cover art commissioned by a friend and created by the magnificent FoxInShadow!)
(Original cover art by the amazing Carnelian can be viewed here!)
(Gore tag for blood and some violence)
(Many thanks to the studius OminousTen, Arzoo, xXFluttershyForeverXx and finally Setokaiva for giving my rambles a once-over)
(Now with it's own TV Tropes page! Get to tropin' folks!)

Celestia raises the Sun for the first time.

Vinyl Scratch never expected to feel the need to say that in front of a crowd.

Sunset Shimmer is finally happy, or so she thinks. Her perfect world gets turned upside down one night when she receives a visit from a former siren. What happens next explains quite a lot.

cover art by harwicks-art

Derpy Hooves is secretly a changeling.

Nopony particularly notices, or cares.

(New 9/15/19: Spanish translation by Spaniard Kiwi! Thank you!)

How much can change in a hundred years? How much can change in a thousand? The day of the Nightmare’s defeat Princess Luna finds herself adrift, a thousand years away from the world she knew. With her home in ruins and Equestria changed beyond all recognition, is there anything left for her when even apples are strange?

Winner of August's Write-off! - Distant Shores

With thanks to JCatt and Lord of Dorkness for their help pre-reading.

Twilight improves upon the portal mirror to allow her and her friends to see alternate universes. They quickly learn things that may strain their current relationship with Rainbow Dash.

Awesome art by AnimeStrife009 on DeviantArt!
Chinese translation was done by Green Onion Nutritious and can be found here: http://tieba.baidu.com/p/3972797172
Russian translation was done by GrandCat and can be found here: https://ponyfiction.org/story/13869/
Thanks, you guys are amazing!
Made the featured box on July 14/15! Thanks everyone!

Spike takes care of Twilight the best he can. She's sick, but he knows she'll get better and everything will get back to normal. But first, he needs to feed her.

Thanks to my editors Cerulean Voice and Soundslikeponies for all their wonderful help!