Gonggi

Scatter all five stones on a flat surface to start the first stage.

Toss one stone up, quickly pick up one stone from the ground, and catch the tossed stone before it lands, repeating until all five have been collected one at a time.

Progress to the next stage by picking up two stones at once per toss, then three-and-one, then all four at once.

If you fail to catch the tossed stone or fumble a pickup, your turn ends and passes to the next player.

The final stage involves tossing all five stones up and catching as many as possible on the back of your hand; whoever advances furthest through the stages wins.