Foggle is a mathematical game using 16 dice and a shaker like the letter game Boggle. However in Foggle the dice have numbers instead of letters, and the object is to form valid mathematical equations. Basic game : Two or three dice are thrown to create the key number. The players then have 3 minutes to find as many correct mathematical solutions as possible to generate this key number from numbers resting in a 16 cube grid. Many different game variations are possible and are all described in the rules.