Use the mouse or arrow keys to move your paddle to keep the ball on the screen. Break all the blocks to advance.

Blocks come in different varieties.
Blocks can take 1 or 2 hits to break apart. Metal Blocks do not need to be broken to advance. Electrified Blocks will break all blocks next to them when they are broken. Hit Bonus Blocks to get Power Ups.

Polarity is a big factor in this game. Your ball is positively charged and will be repelled by Positive Magnets and attracted to Negative Magnets. Hitting the Polarity Block will change the polarity of the magnets. Polarized Blocks, when hit, will drop when the polarity is positive and will rise when the polarity is negative.
Pressing the P key will Pause the game.