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Rullo is a simple math puzzle where you have a board full of numbers. The goal is to make the sum of numbers in each row and column equal to the answer in the box. What you have to do is to remove some numbers from the equation by clicking on them. It sounds simple but requires a lot of thinking. Time to dust off your math skills! Find a way to get the indicated numbers in all the rows and columns. There are 2 game modes: Classic and Endless. In Classic style, you can choose which board size and difficulty you want to play. Endlessly, you will be given a puzzle with random size and complexity. Your total wins in any mode is saved.