Star Stable is what many would refer to as a “kid’s game.” More accurately, it could be described as a game for tween girls who love horses, but during my time with the game, I found that most of the players I met and talked to and most of those I saw on the official Facebook page seemed to be between the ages of 17 and 40. The players I chatted with in game and during my livestream of the game were over 19 (some well over), so it would be most accurate to describe the game as a linear world of adventure for horse-lovers to explore. While on horseback. With other players on horseback. There, perfect.
There is the slightly glaring issue of every character’s being gender-locked as a female rider, but I have no issue with it. The MMO stems from single-player games about a young girl and her horse, as I understand it, so playing as a girl fits perfectly. No “sexism” banners need be waved; for every one example of a game like Star Stable I can show you 100 examples of games that force women to play as men or represent them as scantily clad weaklings.
So how much fun is it to ride around on virtual horses all day? Pretty darn fun.