After surface civilization's destruction, you're an underground survivor exploring a world of unknowns and dangers. Wield your pickaxe, explore ruins, befriend Monster Girls, build automated production lines, construct your base, and return to the surface!
Explore the Inner Earth world and its mysteries in this survival sandbox adventure game! Dig for materials to craft new gear and defend your camp against the creatures and perils of the Core. If you recover the technology lost after the catastrophe, maybe one day you can return to the surface!
