To play the game, you need to arrange the falling shapes, so that you get a complete horizontal row, where the numbers add up to the target number.
Blue numbers are positive and red numbers are negative. When you complete a valid row, the blocks will clear and you will go up a level. Every time you go up a level the range of possible numbers on the blocks will increase and the shapes will fall faster.
Swipe upwards to rotate the shape and either left, right or downwards to move the shape in the corrosponding direction.