Under the Surface is a 2D procedural mining adventure that blends high-stakes resource management with atmospheric exploration. As an astronaut engineer deployed to volatile exoplanets, you must navigate a momentum-based physics system to drill through strata of rock, ice, and magma. The game leverages a "risk vs. reward" mechanic: the rarest materials lie in the deepest, most hazardous layers, forcing you to balance dwindling fuel reserves against the lure of a massive haul. Built on a modular engine, it features a sophisticated "Random Walk" algorithm for mineral generation and a dynamic lighting system that heightens the claustrophobia of the deep.