Global Cataclysm: Infinitely Upgrade Shelter

The shelter system is awakening at the beginning, there are still two months until the global disaster! Falling meteorites, soaring radiation, ice ages, horrific rat plagues, unlimited typhoons, extreme high temperatures, volcanic eruptions... Faced with the coming catastrophe, Zhao Chen began to build his own 'shelter'. Rock shelter→Steel shelter→Tungsten steel shelter→Vibranium shelter....