Apocalypse Architect: A Tower Defense LitRPG

A cosmic ray outbreak caused the environment to deteriorate.

The insect race mutated, the land turned to desert, and resources grew scarce...

After transmigrating here, Zhou Quan put his years of experience beating tower-defense games to use, building all kinds of defensive towers to hold back the insect race.

In turn, the major factions contributed all kinds of scarce resources to build defensive towers, steel walls, human enhancement labs, and more...

Zhou Quan found himself becoming more and more fascinated by this world.

However, he had a major problem: obsessive-compulsive disorder!