General

Use keys a/d to flip through levels, esc to go to start menu, alt to take a screen shot.

Classic Mode

Use the arrow keys to move the paddle, space to release the ball, p to pause/unpause the game.

Creative Mode

Click on the screen to add/remove bricks depending on the brick mode press ctrl to add blank level, del to delete the level. Press q/w to change to add/del mode of bricks, and press 0/1/2/3 to change the clicked brick to a invincible/1 hit/2 hit/3 hitbrick.