Eclipse Phase: Dreams
AI’s that hit the singularity and turned on humanity in a big way. As in started a bunch of wars, created factories which churned out AI driven killer robots by the millions, and then “forcibly uploaded” millions of transhumans by beheading them and stealing their cortical stacks. They trashed Earth, killed billions of us, and had the rest of us on the ropes before they suddenly vanished, presumably through the Pandora gates. Unfortunately, they left killer robots, horrible adaptive viruses (biological and digital), and terrible traps all through known space.