FU: the Free, Universal RPG

From the introduction: FU is a game of action, adventure and fun! It is a role playing game of grand proportions and stupefying simplicity. FU lets you create exciting stories in any setting imaginable, with a minimum of fuss, or even preparation. FU is first and foremost an easy game. This book will help you move from the thought "Lets roleplay in this setting..." to actually playing within a matter of minutes. Character creation is quick and intuitive, allowing you to play any kind of character you desire, and the game system itself is easy to learn and very simple to use.