New power-ups will randomly appear as you progress. Try to collect them as soon as they appear. The explosive and multi-ball power-ups are useful for clearing brickies. When multi-ball is active, the extra balls created do not need to be bounced manually; only focus on the main ball. The finger power up, allows you to send the ball wherever desired. The sawblade power up allows your ball to pierce through bricks. You can have multiple power-ups active at the same time.