Vincent Baker's Midsummer Wood (to differentiate it from the many faerie-based, wood-located midsummer games that are around) is a game for a single human protagonist and four to five faerie players who seek to either make the human fall in love with them or humiliate one of their fellow Faeries.
The game is very short (one playsheet for the human and one for the Fae) and has some really interesting mechanics about asking for help and being denied it. The faerie characters have few responsibilities but if the human is denied then they will discover the blade that will make them the King of Faerie.
The rest of the game is about manoeuvring to either uncover the human interloper, play tricks on other fae or win favours from other characters and then use them in interesting ways.
The game is played to a fixed number of turns so the pressure is on the players to achieve their character's goals and the consequences of the system seem subtle but interlocking.
Use the link to download Midsummer Wood and enter into Vincent's experiment on how and why games gain traction.