Neironet is a very unique puzzle game. It requires a lot of forethought and planning ahead plus a bit of knowledge of color combinations. If you don't know the combinations though, the embedded tutorial within the game will help.
A white ball will be launched from a white box; it will always travel in a straight path unless instructed by another box (Which has an arrow indicator on it) to switch routes. However, the only way the box can switch the balls route is if the ball and the box are of the same color.
There are color changing pieces that will be given to you and you must place them on the grid in such a way that allows the ball to make it to the end location. Some boxes must be combined in order to achieve the correct color.