How to make a disasters plugin?

Hello! I'm trying to figure out how to make a (android) plugin that adds new disasters to the game. It's something I've always wanted to do, but could never find an cohesive guide for it. I'm particularly trying to add a nuclear weapon with increased range, increased fallout, and triggers certain events related to a post-apocalyptic 'gamemode' per se (such as minimal electricity). Also note, I'm unfortunately pretty ignorant to coding, so any help would be much appreciated.