AU: Trixie's life was simple. Study, study, and study some more. Until the possible return of Nightmare Moon comes up. But stopping her is only the start of the new everyday life she will experience in the town of Ponyville.
There exist many worlds some similar, but can also be different. Some worlds could be filled with talking ponies that have very little technology or could have advanced. Or it could be a human variation of it. Behold a small peak at these worlds.