Dead Earth: Survivor's Guide

The year is 2018. Prince Harry has just married Meghan Markle. Toys R' Us is bankrupt. Researchers at UCLA discovered a new super-effective antibiotic combination. There was only one side effect that they couldn't have foreseen . . .

The survivors must now work together to escape from the city of Sacramento to a safer area. The dangers that the survivors will face include undead monsters called The Expired and human factions such as rogue military units, gangs, and other threats. Along the way, the group will need to loot buildings, craft supplies, and manage their stress levels to survive.

This is Dead Earth.