Whether called Iguni, Abhadho, Cincos Marias, or Huripapa, jacks is one of the oldest and most widespread games in the world. All jacks games share a strategy: toss a ball in the air and scoop up pieces before the ball bounces. In this game of skill, almost any collection of small objects will work—beans, rocks, stones, and even bones. Throughout history, kids in virtually every culture on the globe have sat cross-legged and played some version of the game.