Your mouse controls the paddle (The black rectangle). If you let the ball hit the ground you lose. If you hit all the blocks and you still haven't died you win. Also you may notice a doughnut falling from the sky when you get above 5 points. It is a power up. Catch it and you get bigger for 4 seconds.
If this game gets over 25 hearts I'll make another level. Sorry if it glitches. You can just restart the game.