Hero Sheep
You are a team of superhero sheep! You have amazing powers and cool gadgets. Together you could save the world¸ but you all have one weakness: your innate instinct to copy one another! Hero Sheep is a one-page RPG that begs to be played completely on the fly¸ with zero prep time. All that you need to play is a few d8 dice¸ paper¸ pencils¸ and whatever's in your pocket. Players can make their characters in under a minute¸ and the action can start immediately. I even managed to fit in a starting scenario to get your group right into the action! It involves stopping a group of crab-people who stole a truckload of ground beef.