Click on the game screen above. The goal is to eliminate all balls in the board. The game will end if there
are no balls (win), or if there is no more possibility to eliminate
them (lose). Balls will be eliminated if there are more than one ball at
horizontal or vertical direction. The non-ball object is movable, but it is not
able (and it is not the goal) to eliminate them. For every level, there is a maximum number of steps.
Game will be end (and you will lose) after this number of step.