For those who Haven't met Agapi, Like Spike and Starlight who were away when the chaos happened, what happens when they Finally meet Agapi?

Sunset Shimmer is left alone for years after graduating, and finds a job.

Chrysalis finally brakes out of her stone prison, and plans on taking revenge, but what if she's too late?

Glistening multiply wants to raise his children of Scootaloos, one of them wants to capture their "sister" so she can join the family

Somepony messes up and instead of an army of super-fast blue Pegasi, he ended up with Ten thousand Scootaloo’s.

The Story of a young Colt from the Crystal empire Running away from his problems, little that he knew this would change his life forever.

The void knows. The void sees. The void hears. The void smells. The void knows. The void knows. The void knows. And the void wants out, and it wants to have fun doing so.

After Season 10 after Cantalot is rebuilt, Twilight finds something, or somepony forgotten to time. and for a MOSTLY good reason.

Starlight, still in grief from Trixie's death, Trys to see her friend, or a digital version. originally for one last time, plans change.

Basically all universes in fiction are one.... and yes, this would include Fan AU's....