I will admit, they aren't the fanciest, but they work, and they are fireworks. You could make an actual show with these. Though the particles may need turned up a bit to be larger if you eant a professional show look. They work by placing them on the ground, then punching them or using Mesecons to activate them. I am almost shocked torch and flint aren't options. This is not meant to be negative by the way, it's just so close to being perfect.