"unsigned int" is a challenging math puzzle game with two modes. Easy mode introduces addition and subtraction puzzles, while hard levels will test your math skills with multiplication and division.To play, click on the numbered objects. The operation shown on the object you click will affect the total. For example, clicking on an object with '+5' adds five to the total, while '-5' subtracts five. Be careful not to let the total go below 0 or exceed 20.