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Message from a dead game:
Each firework was distinct you could launch each one as quickly or slowly as you wanted to, and in any sequence that you wanted, no game engine limiting you or limiting the number you could launch if you had materials to build a hundred or a thousand. They had like 20 different fireworks, my favorite was the ones that made one huge bang which wasn't shown in video.
The fireworks could also be seen from quite a long ways away,
so it's good to advertise your shop, entertainers regularly used them, or maybe a distraction in a battle, or maybe to mark your position to a friendly. The options were limitless for the seemingly harmless little add on.
Blowing away a ton of fireworks:
World of Warcraft fireworks:
Notice how the distance, altitude, and audio effects of WOW fireworks is pretty small. Developers these days want to minimize how one player can effect the world and totally minimize what one player can do to effect what another player see's/hears, to the point where you cannot effect the world in any meaningful way whatsoever.
I once spent 2 days worth of grinding materials on making fireworks, and blew it all in like 30 minutes for no other reason then cause it looked cool, and I was trying to put on the best fireworks show one guy can make (I used the big boom sounding ones to great effect, alternating with the whistling ones, then visual).