Farming] + [Module] + [Zombie Fighting] + [Tower Defense] + [Slow Start]

This book is also known as "The Day of Doomsday", "Billions of Zombies, I Build a Super Fortress", "People in the Doomsday, I Summon the Big Sister of the 3D Zone", "Others Survive the Doomsday, I Survive the Doomsday"

…

All humans on Blue Star were dragged into a doomsday survival game and randomly assigned shelters.

Amidst a natural disaster of trillions of zombies, countless fortresses stand on the land, within the walls are islands of civilization, surrounded by a sea of rotting flesh and blood.

In the distant future, there is only endless war.

"Fortunately," Shen Lang waved his hand and a dark blue light curtain appeared.

“I opened it.”

All the games and mods he played in his previous life came back to him in the form of a mod manager!

While other players were still struggling, hoping for a piece of black bread, in Shen Lang's underground farm, MC-specific plants were harvested every day.

When other players worked themselves to death and finally got a vault dweller recruitment ticket, Shen Lang's room was almost full.

"Good fellow, I thought you were a cheater, but who knew you were actually a cheat wholesaler!"

…

(Warhammer 40k, search, attack, retreat, loot the gold, run and knife the rat, snipe the rat, hoard the rat.)

After the battle between the Imperial Planetary Defense Forces and the rebels, a large number of reports were scattered across the battlefield. Li Qinwu, who possessed the search, attack, and withdrawal system, began his own land grabbing business.

The laser gun of a fallen soldier? Take it, it fired level 3 ammo.

Shell armor? Take it! It's a level 4 armor.

Wow! The explosive pistol of the fallen political commissar! It fired level 5 rounds!

The destroyed Leman Rustamsk actually yielded a large gold tank battery!

Take them all back to the Underworld hideout! Sell them to various gang contacts to exchange for building materials and upgrade the hideout.

The hideout manufactures sophisticated machine guns and high-powered batteries. Wearing six sets of power armor, it launches a fierce attack on heretics on the battlefield, increases the Emperor's favorability, and ascends to the Golden Toilet!