These are the various balls you may encounter during your game

 Green Ball. This ball has no special function. It is a standard default ball.  Yellow Ball. This ball functions the same as the green ball.
 Blue Ball. This ball causes 3-capsules to turn into 6-capsules.  When you're stuck with this ball, the bricks will only drop Red-X capsules. Fortunately, an occasional 3-Capsule will fall.
 Radioactive Ball. When you have this ball, click the mouse button to release radiation. The reaction lasts only a few seconds, but while it's happening this ball will annihilate each brick it touches. For some reason, the gold bricks aren't affected by this type of radiation.  Bubble Gum Ball. When this is the only active ball, it releases five large pink bubbles. If you can pop all five bubbles before they disappear, you'll get some bonus points.
 Purple Ball. Hit the umphee with this ball and he'll dive down into the sand and pull out a treasure chest!  Orange Ball. Hit the umphee with this ball and he'll dive down into the sand and retrieve a gold coin.
 Bomb Ball. Click the mouse button to set it off. Most bricks in the vicinity of the explosion will be destroyed. (There are a few places where these appear in the unregistered version of the game.)  Only the keenest players will discover the power of this ball...