The objective of the game is to put the bull’s eye, which is on a slider that goes from 1 to 100, as close to a randomly chosen target value as you can.
When you’re confident of your estimate you press the “Hit Me!” button and a popup, also known as an alert, will tell you what your score is.
The closer to the target value you are, the more points you score. After you dismiss the alert popup by pressing the OK button, a new round begins with a new random target. The game repeats until the player presses the “Start Over” button (the curly arrow in the bottom-left corner), which resets the score to 0.