|Image Source via Equestria Daily|
I'm not sure how long it has been out (somehow I missed it) but there is a My Little Pony Castle Creator Game on Hubworld. The game description is "Choose from a variety of characters, clothes and accessories to create your own magical vision of the spaces in and around Canterlot castle!"
It made the pony news rounds last week because it was recently updated with background pony Derpy and an unusual version of Princess Luna. Nayuki, a layout artist for the show, revealed that pink Luna is from a makeover scene that was cut from Season 2, Episode 4 "Luna Eclipsed", according to Equestria Daily.