This maths game is for both children and adults. It starts off with easy questions that progressively get harder the more you get right. The purpose of the game is to improve your calculation skills by answering the questions correctly, before the spaceships get too close and destroy your turret.To answer a question enter the number using the buttons on the left and then confirm it by pressing the button on the right. If the answer is correct, your turret will launch a rocket and shoot the corresponding spaceship down. The questions involve addition, subtraction, multiplication and division.Playing the game regularly will help train your brain to make these calculations faster and give you a mental workout.