CorePiercer

CorePiercer is about exploring underground in a high-tech train. As rising solar radiation makes Earth’s surface increasingly unable to sustain life, scientists develop trains that can travel efficiently underground. The first leaders of the people’s association use them to explore toward the planet’s center and learn how to survive below the surface.

Underground hazards

Heat and pressure make cooling a primary concern. Your journey may also bring you into contact with groundwater, undercurrents, lava flows and hard rock formations. The train can travel to unlimited depths and distances, but you need to strengthen its carriages, increase its supply capacity and upgrade equipment to explore farther.

Train and equipment

You can upgrade two types of drill bits. Harder bits break through harder rock, while vibrating bits increase the speed at which you break rocks or minerals. A replenishment carriage carries water and oil, and an additional cargo carriage increases your carrying capacity. A turbo car can increase travel speed in water, and building a subway station lets you replenish supplies without returning to the surface each time.

Keep an eye on fuel: when it runs out, backup power lets the train move forward slowly. Game scripts are editable, so you can modify or add content; using personal scripts disables Steam achievements and leaderboards.