Greenshift

Terraform a barren moon across a thousand years, from orbit. A dead world, a finite budget of effort, and a genuinely coupled climate model — energy balance, carbon cycle, ocean chemistry and biosphere all feeding back. You cannot micromanage a planet; you choose which slow processes to start. Vent volatiles, darken the ice, raise a magnetic shield, seed cyanobacteria and wait generations for oxygen. Then ADVANCE CENTURY and live with the answer. Four worlds, four strategies, and a legacy rather than a score.