In Blobs 2, you have to keep the piles of blobs from building up to the top of the screen. You control the flashing red ball at the top of the screen. It is the only weapon you have to destroy the blobs. As the game proceeds, more and more balls than added to each pile of blobs. To shoot, click and drag the ball back in the opposite direction of where you want to shoot. When you let go of the mouse, the red ball will shoot balls out and break up the blobs. If the blobs cover up the red ball, you can no longer shoot and you lose the game.