Blue Powerups are helpful, and will give you special items to help you remove blocks faster to get a higher score. They are:
Magnets - hold the ball to the paddle.
Rockets - to shoot at the blocks.
Direction - enables you to control the movement of the ball.
Exploding Balls - blow up several blocks each time you hit one.
Stretch - stretch the size of your paddle.
Multiply - multiply the number of balls on the screen.
Slower - slow down the speed of the ball.
Slice - cuts straight through the blocks.
1 Up - extra life.
Dynamite - explodes fire blocks.
Exploder - increases fire blocks.
End - explodes remaining blocks when only one viable block left.
Red Powerups are harmful and will hinder your ability to remove the blocks. They are:
Sword - causes instant death of a paddle.
Shrinker - shrinks the size of the paddle.
Mouth - takes bites out of the paddle.
Block Dropper - lowers the blocks each time you hit the ball.
Speed - increases the speed of the ball.
Invisible - turns the ball invisible.
Rain - rains down a series of bad powerups.