|Winter Knight FATE Dice (Photo credit: Eoghann Irving)|
Fate is a highly flexible story-driven system descended from the venerable FUDGE system. With roughly an hour of discussion around a table with your friends you can adapt any of your favorite role-playing settings, books, movies or good old wild imaginings and start playing. Evil Hat also publishes Fate Accelerated Edition (FAE), a trimmed-down version excellent for introducing folks to Fate and RPGs in general. I used Fate Accelerated for a pick-up game of wild pulp space action at my FLGS.
You'll need 2 to 4 friends, pencil and paper, four Fate dice (recommended but regular d6s will do) and some beads or tokens or such to use as Fate points. Gamemasters tempt the players into risky actions and players propose wild plot twists by exchanging Fate points.
There are a wide variety of game settings already available for Fate and more are on the way. Evil Hat has published the Fate System Toolkit to help you fine-tune your game and two volumes of ready to run Worlds for your friends to adventure in.
Fate: Core System and Fate Accelerated are both available as physical books and pdf versions are available as pay-what-you-want items from DriveThru RPGs.