Aftermath: Population Zero investigates what would happen if every single person on Earth simply disappeared. Explore the interactive world without us. Aftermath: Population Zero investigates what would happen if every single person on Earth simply disappeared. Explore the interactive world without us. Aftermath: Population Zero investigates what would happen if every single person on Earth simply disappeared. Explore the interactive world without us. Aftermath: Population Zero investigates what would happen if every single person on Earth simply disappeared. Explore the interactive world without us.