From the River Horse website:
Hey there! So I imagine if you are taking a look at this game, you know a little about My Little Pony, perhaps you are a fan of the show or maybe you collected the original toys when you were younger. This book is a manual for a storytelling game that allows you and your friends to explore the amazing and magical world of Equestria – Will you be a dynamic adventurer like Derring Do or a stylish diva like Rarity? Tails of Equestria allows you to create, name and play as your very own pony character to solve puzzles and explore dungeons, there may even be some dragons!