The game's objective is to dismantle a 3D construction composed of a certain number of balls. Some balls are mines. Each ball has a number on it, which indicates the number of neighboring mines. Balls should be colored to white (non-mine) or red (mine) color and then removed from a 3D construction.
Click on the ball and select the color or action at popup panel. You win when there are no more mine balls left. You lose when you remove a ball marked with the wrong color.