Doomsday: I Awakened the Lord System

Global catastrophe, mysterious light curtain falls from the sky, dividing the blue star into red zone and green zone. The green zone is calm, but the red zone will randomly refresh natural disasters, such as the Ice Age, the World-Destroying Flood, and the Lava Cave... When killing monsters in the red zone, there is a chance that extraordinary items will be dropped, which can awaken superpowers, such as lightning speed, rock power, and beast shape transformation... And when the natural disaster ends, a wave of monsters will erupt to clear the area. Finally, the settlement will be based on the kill contribution, and mysterious rewards will be drawn, such as mechanical sentries, strange tree seedlings... While everyone was still testing the waters on the edge of the red zone, Chen Fan's shelter had already taken root in the danger zone. He awakened the lord system, which not only allowed him to build powerful defense towers, but also exploded troops like crazy. [Arrow Tower] → [Cannon] → [Mage Tower]... [Barbarian] → [Archer] → [Giant]... Until [Thunder Dragon King] "I heard that madman... He built the most dangerous lava volcano into his own backyard." "Latest information: During the last S-class flood, the Thunder Dragon King raised by Chen Fan ate the final boss as a snack." "God bless, I hope I can win the qualification for Chen Shen's shelter in the lottery this time." National Survival+Doomsday+Tower Defense+Invincible Flow+Zombies+Multiple Female Hosts PS: The pace at the beginning is a little slow, but the plot will gradually unfold later, and everything that should be included will be included.