Because of the increase in solar radiation, the surface of the earth will soon be unable to sustain life, and people will need to move to the ground in the future. Therefore, scientists have developed high-tech trains that can shuttle underground efficiently.

## About This Game
Because of the increase in solar radiation, the surface of the earth will soon
be unable to sustain life, and people will need to move to the ground in the
future. Therefore, scientists have developed high-tech trains that can shuttle
underground efficiently. It is also necessary for the first batch of people’s
association leaders to conduct experiments to explore the center of the earth
and learn how to survive underground.
It is known that the center of the earth is a high temperature and high
pressure environment, so cooling is the primary problem. It may also face
groundwater, undercurrents, lava flows, and hard rock formations.
In order to increase the depth of exploration, you must strengthen your
carriage, improve the supply capacity, and upgrade various equipment.
Pay attention to your fuel. If you run out of fuel, you can only use the
backup power to move forward slowly.
There are two types of drill bits that can be upgraded. Harder drill bits can
penetrate harder rock formations, and vibrating drill bits can increase the
speed of breaking rocks or minerals.
The replenishment carriage contains water and oil, and the additional cargo
carriage can increase the cargo capacity.
If you want to drive in the water, it is recommended to add a turbo car, which
can increase the traveling speed.
If you have enough resources and you can build a subway station, you don’t
have to climb to the ground every time to replenish it.
Some feature list as follows:

1\. Easy mining with high efficient miner trains.
2\. There is unlimited depth and distance you can travel.
3\. To build and upgrade your train to explore deeper.

CorePiercer