Doomsday siege in a box

Description

The title of the secondary book [Playing Tower Defense in the Box], the Tower Defense plot is opened.
After Zhen Fan was unemployed, he received a strange iron box, and an extra [Siege of the Doomsday] mini program was added to his mobile phone, which deducted all his savings.
The box is a doomsday environment, and some villains from other worlds will continue to appear.
So he became the main god of the villain, and the villain became his follower.
When the villain survives the zombie wave, Zhen Fan obtains wealth; when the villain completes the task, Zhen Fan obtains wealth; when the villain's task rating is improved, Zhen Fan's wealth value doubles.
As long as the villain is protected to survive in the doomsday, Zhen Fan can continue to gain wealth.
He can also manually upgrade and awaken the villains and lower the earth's supplies to the box.
But these materials will cause the backlash of the rules of heaven and earth, allowing the villains in the box to experience continuous tower defense tests.
...
All humans in the Blue Star travel through the doomsday world, and the girl Lin Lu comes to a gathering place of zombies.
When she was desperate, a main god suddenly appeared, and the gift package at the beginning was given directly to her for thirty minutes to protect the moment of the main god.
Next, Lin Lu and all the Blue Star people were rejected by the rules of the world of the Doomsday, and more and more Doomsday Legions targeted them.
Zombie tide, Zerg army, weird army...
There are also various extreme environments that have successively enveloped this pure land: typhoons, heavy rains, ice, heat, fog...
Only by relying on the various materials of the Lord God can we resist these disasters.
The pork and vegetables on the earth are cooked by villains to create extraordinary dishes that increase attribute values ​​and recovery abilities.
After absorbing the breath of doomsday, the model on Earth directly contains the source of power!