This is a game where there is a number counting up, and a goal at the top. Press the "Start" button for the number to start counting up. Then, press "Stop" whenever the number reaches the goal. If you are not exact, the game is not over. Instead, the difference between the number you stopped at and the goal is added to the "Error". If the error reaches 30, then you lose. After 15 levels, the number will count faster exponentially, and even faster after 30.