A World of Extremes

The Day Side: Temperatures exceed 400°C. Radiation scours the rock. No human can survive unshielded. Robotic mining operations push into this hellscape, extracting rare alloys and crystals while fighting constant equipment failure. Salvage crews—"daywalkers" with exceptional thermal resistance—venture to the margins when machines fail, risking their lives for premium compensation.

The Twilight Belt: Home to 80% of humanity. Linear cities stretch along the habitable zone, their architecture harmonizing with the eternal wind. Temperatures range from temperate to moderately warm. Vertical farms grow crops in controlled microclimates. Every settlement is fortress and garden both, resilient and beautiful. But the wind never stops, and where hot meets cold, superstorms rage.

The Night Side: Frozen darkness broken only by auroras and geothermal vents. Cave-dwelling communities of 50,000 to 150,000 cluster around warmth sources, developing distinct cultures and psychic abilities tied to resonance and vibration. Ice harvesting sustains the twilight belt. The Deep Roads—ancient tunnel networks of uncertain origin—connect scattered outposts through kilometers of stone.