Gorgeous illustrations, but the White Horse of Lowvale's almost complete lack of RPG mechanics basically means it's little more than an art book. The book "aims to spark ideas", making it easy for the GM to "improvise", according to the Kickstarter page. Ideas, however, are the easy part; and like most 'system agnostic' game books, the White Horse of Lowvale is telling you to do the heaviest lifting (i.e. the rules and mechanics) on your own.