Olaf Hits the Dragon With His Sword, and Dice Stories
Though you might not think to look at it, Olaf Hits the Dragon With His Sword is an RPG, even if the entirety of the game is summed up by its title.
The mechanics are simple enough: you and your fellow player have six colors of dice, and you answer a few narrative questions about your character — Olaf or the Dragon, natch — and their motivations. Each different answer corresponds to a color of die, and you put said colored die in the central pool after giving your answer.