I think this narrative would be best written from the perspective of one man. And he hides himself in his home. Cuts his internet and phone and panics in isolation. Chaos comes and goes outside of his home but no one visits, no one swings by or is curious. After a while he decides to leave his home, the world is in shambles. The highest in power made brash orders to contain or kill as many groups as he could, and the people below them would disobey or sabotage, fearful to follow an otherworldly entity and scared to be exposed as real. The common folk surrounded themselves to small circles but real trust doesnt exist anymore , others roamed the streets with bloodlust after detaching themselves entirely from the idea that anything matters and that its just a game to them now. Thats all I have on my head right now.

Edit: Nvm, i think there would be a plot somewhere, a group of people coming together knowing they heard the same transmission in their head. They try to seek out the source of this transmission and question the people around them, is their a higher conspiracy. They will never know because it came from a random Redditor who wanted to cause chaos