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Story:

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.

**Game never die**

Game scripts are editable. You can modify or add any content of this game if you are interested. But if you use personal scripts, steam achievements and leaderboards will be disabled.

Challenge:

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.

Technology:

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.

Features:

• Easy mining with high efficient miner trains.

• There is unlimited depth and distance you can travel.

• To build and upgrade your train to explore deeper.