You will be asked to think about any two digit number, add both digits, then subtract the total from your orginal number. Just THINK about the corresponding symbol from the list of symbols shown, and then click on the crystal ball. The ball will predict the symbol you are thinking of.

Play as many times as you want (Just click on 'Try Again' after the ball picks your symbol the first time). Each time you pick a new symbol, the ball will predict each new symbol you are thinking of every time.

There's a simple explanation so don't worry, you haven't suddenly gone down a rabbit hole, but this certainly had me laughing for a while until I figured it out.