Gonggi Weighted MetalThe material of the Gonggi Korean game set is metal zinc alloy, and the gongii is of suitable weight. Both children and adults can play. Not only is the gonggi squid game a strategic challenge, it is especially beneficial for people with autism, ADHD, ADD, and OCD.

Level 1: Five stones are scattered on a flat surface and the player picks a stone to throw up in the air. While the first stone is still airborne, the player grabs another stone on surface. Then, the player catches the now-falling stone. This is repeated until all the stones have been caught.

Level 2: The stones are scattered. However, at this level, the player picks up the stones two at a time.

Level 3: The stones are scattered. This time, the player picks up the stones in a group of three, and then the remaining one.

Level 4: The player throws one stone in the air, places the others on the surface, and catches the airborne stone. Then the player tosses the same stone again, but this time, picks up the four clustered stones on the playing surface and catches the airborne stone.

Level 8 (called 꺾기): The player tosses the stones from the palm of their hand into the air. While airborne, the player twists their hand backside up. The stones are then caught on the back of the hand. Then, the player throws the stones in the air and catches them. The number of stones caught amount to the score. There are various tricks in this phase, such as "The Dragon" and "The Clap–Toss".