Fall of Equestria is a dark, alternate universe where invading, patriarchal caribou have overthrown the old order and enslaved all females. Using a corrupted crystal heart, they've shifted the minds of the Equestrians such that most of the males accept the brutality, while many of the females accept the new place society has dictated to them. Mares are classified into four collar colors: silver for those not classified, red for the willing, black for the unwilling, and purple for those that lack the capacity to meaningfully choose.

Unicorn females have their horns removed, and pegasi have their wings plucked and sealed in shrouds.

(Fall of Equestira, created by non_creepy_nickname)