The Mane 6 meet some of their horror-based doubles when Discord gets irritated. Too bad he didn't tell the monsters that they would be working together.
AU to Broken Blossom: Can Joyous Blossom be saved by her mother, Sweetie Belle, or is all hope lost? Can a mother save her child? Even if she's a monster?
An alternate universe to A Shadow Hangs Overhead. The Mane Six fails in their attempt to stop Nightmare Moon. Rarity, the sole survivor of the group, is forced to become Nightmare Moon's personal assassin.