Amped

Welcome to the last known surviving city of Altera. Having turned to ruble after the impact of the Meteor Calamity, the planet Altera and its inhabitants slowly started to die. After some time and many deaths to the population of Altera, the inhabitants finally found a way to counter the poisonous gas that was released from Calamity upon its impact.
With the Construction of the Towers the cities of Altera were able to live normally, even if for a little time. You see these towers functioned as the home for the rich but also for a beckon, which released an anti toxin into the air purifying the surrounding area. Being at the center of most cities the anti toxin was able to spread over an entire city purifying the air.
However after some time it was observed that as people lived further away from the tower seemed to be getting sicker faster, so as counter measures all the still living people were moved to directly around the tower, with the people willing to pay at the closest and the people that had no money further away.