The aim of this game is to simulate a waterfall using numbers. The waterfall is considered well-formed only if:

- The sum of the numbers that form the waterfall is equal to the goal.

- The marked numbers should be adjacent horizontal, vertical and diagonally. That is, there is no empty line union.

- There are 2 numbers marked on each row.

Also available a challenges section, where different challenges and variations of the game appear. In both cases, there are two levels: normal and difficult. In the normal level, the sum of the waterfall numbers is shown, however, in the difficult level, you will have to sum them mentally because it disappears.

Sum and subtract. Sharpen up your mind.

This game is compatible with Android Wear