I leave you some very good sprites that recreate a nuclear explosion in a city. It would only be to put them all on a stage as animation and that's it.
are over 150 sprites animated.The good thing would be to put the normal city for about 40 seconds and then the attack.is a really good animation.get of game Teardown
link:
https://www.mediafire.com/file/0u2wirk5b2x52x5/nuclear_sprites_stage.rar/file