Title: Corruption of the Fallen

Main characters: Rainbow Dash, Applejack, The Mane Six.

Genre: Alternate Universe, Adventure, Anthro, Dark(NSFW), Crossover.

Crossover With: Corruption of Champions.

Premise:
Many years after the fall of Equestria, mares have been enslaved and sexually tormented by the Caribou. Despite many of the mares falling to their depraved desires, Applejack and Rainbow Dash still fight on...

However one day, Applejack and Rainbow Dash wake up in front of a portal, a voice from said portal beckons them, stating that it
can send them far away to a new world, where they can gain the strength and power to fight back and somehow make things right...

Seeing nothing to lose, the two enter the portal. Now in a world run by demons and other mythical creatures, they must now find a way to survive their new environment...and try to resist the temptations of this world...and unknown to them, their old friends have been brought to this world as well...