This time-waster does not require any puzzle-solving skills or really any thought at all. You just have to use your mouse to click on the firework rockets before they hit the ground. Miss one and the game ends. Firework Frenzy lets you just enjoy the pretty fireworks while you test your reflexes.
Just don't get too engrossed in the beautiful fireworks and forget to click the rocket. As the rockets become faster it becomes harder to click them. Watch out for the ones that go straight up fast. Those are the ones I usually miss.