National Tower Defense: Summon Sandbox Players at the Beginning

Li Chen traveled to a tower defense world. The outside is full of terrifying dark creatures, and humans can only survive in the city. Endless darkness enveloped the entire world. And Li Chen, who traveled through time, awakened the god-level summoning system. Players on the earth can be summoned to come to this world to work for him. Every player can contribute experience to him, allowing him to improve his strength. Although the players are competing against each other. But they were infinitely resurrected and became the terrifying fourth natural disaster. Sweeping the whole world. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.