The game is a virtual obstacle in the physical space of the drop down box that touches the ball* The power of the length in one direction and the touch in the direction of the ball's movement are determined. (For example, if you lightly touch and hold fast from top to bottom, similar skills like volleyball spike work.) * Gravity and real-world physics engines are affected using balls and boxes. The emergence of various football, basketball, baseball, volleyball, tennis, rugby, and touch balls.