Fan MMOs are sort of a rarity, especially when they are released in quick succession. It wasn't too long ago that MLP:Online was released, and even then it was just the single player mode. And all of a sudden out of the blue pops a brand spanking-new pony MMO that nopony has ever heard of and takes the crown for the first playable MLP MMO (and one of the first ever HTML5 MMO games). Mind you it's still in an early alpha state and doesn't have all the features of the final product (it lacks different hairstyles and races), but it's still quite worth playing already.

Why not give it a try, eh?