16 balls numbered from 1 to 16 are randomly placed on the table. The table has 16 "holes" (sockets) with numbers 1-16. The idea of the game to move all balls and place them in corresponding holes with the same number. You may move the ball, by swiping over it in necessary direction. When all 16 balls are installed correctly to their holes, you win the set and go to the next level.