Train your visual-spatial ability. Proposition: Exercise your mind and your visual-spatial ability with the challenge of this game. Neuroplasticity is a theory that tells us that we are not static in our learning. How: Pick up all the tennis balls for a pattern in the shortest distance possible. Play using the same pattern or change the pattern. Play against the person next to you. History: I thought of this game as I picked up balls after a tennis clinic. Being tired from the exercise, I was trying to figure the shortest distance to pick up all the balls.