how to play: A user gives a math equation and the next user has to solve it. The number of the outcome becomes the first number you have to use to make your next math equation. Example 2+2 = 4 Next user : 4 x 4 = 16 and Next user 16 ÷ 2 = 8 and so on. To make a math equations you can only add, subtract, multiply, divide you can pick which ever u want to use. ETA: This game is a lot more fun if you don't use a calculator or the internet. try to make your brain do the job or use a pen and paper.