You will have to control a cube with which you will be marking with your color a three-dimensional figure to eliminate your rivals conquering their territory and thus exceed the level.
You have to close areas to cover them with your color, but you will also be able to eliminate your rivals by touching their trail when they are in your territory, although you should avoid having them do it to you.
It has hundreds of levels where it will be increasingly difficult to overcome the rivals, with more and more elaborate figures to color in three dimensions.