Pony Island is an adventure/puzzle/platforming game where after attempting to repair a malfunctioning arcade machine you end up trapped playing a game designed by the devil. A game with some similarities to something like The Stanley Parable or The Beginners Guide in how it plays with normal gaming concepts and ideas to make something interesting. Pony Island is easily worth trying for the low asking price. Near the end the game uses Steam in the best way that I've seen.