This story is a sequel to Metroid Equis

With the culmination of events on the BSL Research Station, Samus Aran is finally able to come back to Equestria, Planet Equis; to come back home. Much has changed in her absence, but it is still the friendly, peaceful, welcoming planet and nation that she left behind two and a half years prior. With the Space Pirate threat neutralized and the secret, illegal Metroid militarization programs destroyed, it appears that Samus can finally take another massive breather with her friends and enjoy some well-deserved rest, recovery, and relaxation. The galaxy is finally at peace.

At least... for a short while.

A new enemy, one much closer to home, soon rears its head, threatening all of Equestria and Equis with complete and utter annihilation. Their mission: revenge. Samus will fight with all of her being alongside her allies against an enemy who would like nothing more than to see all that she holds dear, including her home planet, completely razed. In so doing, her cunning, ever determined enemies unleash a weapon so unexpected, so eerily familiar yet horrifically foreign that even Samus herself just might prefer the late Ridley or the SA-X...

Editing Team: Random_Dragon; ToxiClay

The Metroid Timeline/Chronology (confirmed by Nintendo) can be found here.

Canon Considerations
MLP-FiM: Up to AND including "Magical Mystery Cure." (Seasons 1, 2, and 3)
Metroid Series: Everything up to AND including Metroid Fusion (Including original mangas. See official timeline above). So, effectively everything.

This story is a sequel to Upheaval: Reckoning

Equestria's fragments have reunited, and the power of sunlight shines once more within Celestia. With the remnants of the Old Kingdom destroyed, the Abyssal Throne sent away, the threat of Gravitas defeated, and Black Rose no more, Equestria now faces the encroaching darkness of Oceanus and his rebels.

But the stage is not yet fully set. Twilight Sparkle and her friends must gather what means they may before the battle is joined.

Cover art provided by Captain Nibbles

After the siege of Bastion City and the theft of the power of sunlight, Spike takes on Prince Terrato's offer to train under the kirin, Seethe Scale. He must travel to the Western Barrier Land to gain the strength to help his friends.

Once there, however, Spike soon realizes that there is more for him to contend with in this harsh environment than developing his abilities.

"You" have been watching your mom swoon over Octavia for a while now, and you finely think it's time that you did something about it. You have worked out the most amazing plan ever and your not afraid to use it. With it mom will at last be special someponies with Octavia!

Was bumbling around /mlp/ and made a thing. You might enjoy it, you might not, it's here either way. Updates will be very infrequent. They are also being presented to you as is, only edited to fit the general rules of the site.

It isn't often that things go well for Derpy. Between her eyes, her clumsiness, and her propensity for disaster, it's hard enough just to make friends. Add to that a revolving door of jobs and a daughter to raise, it's a miracle that she has much time for herself at all. So when her date stands her up at a loud, flashy club, it hurts.

Maybe she should just give up. Or, maybe she just needs the kindness of a strange bartender in purple shades.

Image source.

After a freak accident, Princess Celestia finds herself in a whole new universe. As she seeks a way home, she is captured by none other than Team Rocket.

Welp.

Now on TV Tropes.

When ponies after three years still looks at Luna as Nightmare Moon and her sisters will not listen to her, she takes matters into her own hoffs. She travel to another dimension and will never come back. There, she discovers creatures she has never seen before called Pokémon. Then she decided to go on a journey herself with a help of former champion that has lost his spark.

Got the idea from this story from Cheesecake404

Mlp/Pokémon crossover, I own nothing.

Apparently, some are wondring why the sex tag is on, that’s because Luna is naked in the second chapter. Nothing major.