The goal is to eliminate all balls on the board. The game will end if there are no more balls (You Win), or if there is no more possibility to eliminate them (You lose). The balls will be eliminated if there is more than one ball at horizontal or vertical direction. Non-ball object is movable, but you are not able (and it is not the goal) to eliminate them.
Use the Arrow keys to move the balls.
For every level, there are a maximum number of steps. Game will end (and you will lose) after this number of steps are reached.