Doomsday: Unlimited Upgrade Mobile City

Wang Cheng had traveled through the apocalyptic world, and the radiation had caused the world to be flooded with beasts. All humans lived in various floating mobile cities.

Congratulations to the transmigrator for awakening the City Lord System. You are rewarded with a mobile city! You only need to sign in to the city and famous attractions to choose the upgrade reward.

Thus, the most luxurious and safest mobile city in the apocalypse was born.

Check in at the ruins of Shan City, Guangnan Province! Please select your reward: 1. Seawater purification system 2. Super power system

First time signing into the ruins of the industrial park. Please select. 1 Mecha Factory 2 Mobile City Expands

First time checking into the ruins of a movie theater. Please select. 1 Entertainment Center 2 Film and Television Center

The second city ruins, Chao City, Guangnan Province! Please select your reward: 1. 600mm particle cannon 2. Unmanned combat aircraft factory

At this moment, countless people around the world wanted to migrate to Donglong Mobile City. This…