This game lets you have fun spending your free time and also, to improve the cognitive abilities of your brain (reaction time, decision-making time, left-right hand control)! Subtract, multiply, divide, among numbers at four levels of difficulty! Calculate your level of intelligence and watch it grow through regular workouts! After a while you will feel that are better count, reaction and hand control increased! Collect points! Post your achievements on Twitter and Facebook! Compete with other players!