This math puzzle game offers two modes. The easy mode features addition and subtraction challenges, while the hard mode introduces tricky multiplication and division problems. To play, simply click on the numbered objects—each one affects the total based on its operation. For instance, clicking a "+5" object adds five to the total, while a "-5" object subtracts five. Your goal is to keep the total within the range of 0 to 20. Avoid letting it drop below zero or exceed twenty. The simple mechanics make it easy to learn, but the hard mode will test your problem-solving skills.