Instruction:
- Click on a number to include or eliminate it from the formula. - Hold a number for a while to lock it. Hold it once again to unlock. - Click on a radiant response box to lock all numbers that comes from its row or column. - Make the amount of numbers in each row and column amount to the response in package. Rullo is an easy mathematics puzzle where you have a board loaded with numbers. The objective is to make the amount of numbers in each row and column amount to the response in package. What you need to do is to eliminate some numbers from the formula by clicking them.