survival with the system in the world of nuclear apocalypse

There is radiation all over the world.
Radiation is divided into 5 levels of danger.

You can add your own floors and modules to the bunker.
modules that can be built: 1) food block module; 2) communication module; 3) warehouse module; 4) weather module; 5) medical module; 6) industrial module; 7) stored information module.

The system is a highly technological device that only one person in the entire world has.
In the system you can: 1) buy ammunition and food in the store; 2) improve your characteristics for experience, which is gained when you level up.

There are many factions in this dangerous world.
Top 5 strongest factions: 1) "Blessed"; 2) "Hounds"; 3) "Nightmare"; 4) "Secret"; 5) "Survivors".