This is a mental arithmetic game. If you want to do some mental arithmetic exercises for you or for your children, it will be a great choice. Random map, three kinds of attacks, automatic aiming, input the correct result of the equation to shoot. The difficulty of equation is adjustable. You can choose addition, subtraction, multiplication, division, arithmetic digits. Decimal or negative number will not appear in the equation. More difficult, more score. Your best score will get into the global ranking. Operation: WASD or arrow keys – to move. Numerical key – to…