Bonuses and Penalties
Bonuses

Increases the size of your "bat" or "racket"

Adds another ball to the game

Decreases the speed of the ball

Gives you extra bonus points

Allows you to move the Tetris pieces (if you got the corresponding penalty which disables you from doing so)
Penalties

Decreases the size of your "bat" or "racket"

Increases the speed of the ball

Disables you from moving the Tetris pieces.