Your ship never made it.

Following a distress signal you were never meant to hear, your vessel is shot down over a mysterious planet.

You wake in the wreckage and step into a world already moving against you. What begins as a search for the source of the signal soon becomes something far more dangerous: a civilization conflict a thousand years in the making, a planet on the brink, and a hidden power controlling every move from the shadows.

They didn’t account for you.

Armed with technology no one else on this world possesses, you are the one variable that breaks their equation. Whether that saves this planet or buries it is entirely up to you.

A New Main Story Begins

Follow the signal and pull back the curtain on Terracrypt’s buried history. You will be drawn into a thousand-year conflict between civilizations, forced to navigate rival powers, unite fractured factions, and build the alliances needed to stop an enemy plan to drain this planet dry and leave it to die.

Descend Through Three Layers of the Unknown

The underground world is open.

Thirteen distinct biomes stretch deep beneath the surface, each with its own atmosphere, hazards, resources, and survival rules. The depths do not ease you in—every region demands adaptation, every layer pushes back, and every step downward brings you closer to the truth.

Befriend the Creatures Below

You are not alone in the depths.

Strange creatures survive in the tangled ecosystems beneath the surface, each shaped by the world around it. Learn their behaviors, tame them, and build your own underground creature squad. Your companions can help you cross hostile terrain, face powerful enemies, gather vital resources, and survive where no one was meant to live.

Face Eleven Formidable Bosses

Eleven new hostile bosses stand between you and the truth.

Each one has a weakness. Each one is ready to use yours against you. Every fight is a test of preparation, strategy, and survival. Win each encounter, confront the final threat, and help a resistance on the edge of extinction rewrite the fate of their world.

Civilization Technologies and Advanced Systems

As your journey pushes deeper, new technologies open up.

Harness gas-powered technology to strengthen combat, expand mobility, and build a unique automated production system. Use genetic and photosynthesis-based technology to cultivate plants and creatures, reshape your survival strategy, and turn the underground itself into your advantage.

...and more surprises still waiting underground.