The balls will pile up as they drop, in groups of 3. Use your left and right arrows to move the clusters to the left or right and use your down arrow to rotate the groups. The goal is to create groups of 4 or more same colored balls to make them pop and get points. Popping balls keeps them from piling up and reaching the top. When you have the balls where you want them, press your space bar to drop them. How many levels can you plan and strategize your way through? Hours of outrageous fun await when you play Pile Of Balls!