Apocalypse: the Arrival of the Zerg

Hundreds of millions of years ago, there were three supreme civilizations in the universe: the Netherworld Civilization, the Star Beast Alliance, and the Divine Civilization. I don't know when ferocious Zerg appeared in the universe. They called themselves Zerg and devoured everything and reached the level of 13th level civilization. Their overall strength was still higher than the previous three major civilizations. So the super war spread all over the universe. The three major 13th level civilizations jointly conquered the Zerg. The long war lasted for thousands of years. Both sides suffered heavy losses in the year, but the Zerg gradually gained the upper hand by relying on their powerful reproductive and evolutionary capabilities. The leaders of the three major alliances agreed to unite all the forces of the three major civilizations to prevent the Zerg from destroying the universe. Then the final battle broke out. The three major civilizations used the supreme law to kill the Zerg master and finally won the war. Before the destruction, the Zerg civilization gathered its last strength and issued many civilization seeds to continue its own civilization. However, after this battle, the three major civilizations were almost completely destroyed. Before the three major civilizations could recover their strength, the Mechanical Empire and the Holy Empire under their rule... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.