Gong-gi is a traditional Korean game.

It is similar to jacks.

This is how you play:

1. Cast the Gong-gi on the ground.

2. Pick up one piece and toss it in the air. While it's in mid-air, try to pick up another piece and catch the piece in mid-air at the same time.

3. Continue by repeating this, keeping the pieces you have collected in your hand while alternately tossing one piece in the air and collecting one from the ground.

4. Repeat steps 1 to 3 but collecting the stones from the ground in twos. Then by threes, and finally all four at once.

5. When all the rounds are complete you may try to score points. Gently toss all the pieces into the air and try to catch them on the back of your hand. Score points equal to the number of pieces you've caught on the back of your hand.