I created a Mars colony RPG based on Kim Stanley Robinson’s Mars books
I built a desktop Mars colony survival game called Underhill, in homage to Kim Stanley Robinson's Mars trilogy. Land on Mars, build solar panels and greenhouses, and try not to pass out during dust storms. Eventually your colonists split into factions: Greens who want to terraform and Reds who want to preserve Mars. There’s Chill Mode for players that just want to build & hang, and Conflict Mode that introduces the Red v. Green factions. Reds sabotage, the terrain slowly turns green as the world gets more terraformed. Feedback welcome, especially on performance and gameplay!
In plain words
Underhill is a desktop Mars colony survival game inspired by Kim Stanley Robinson's Mars trilogy. Players land on Mars, construct infrastructure like solar panels and greenhouses, and manage colonist survival through dust storms. The game features two modes: Chill Mode for relaxed building, and Conflict Mode where colonists split into factions—Greens seeking terraformation and Reds wanting to preserve Mars as-is. In Conflict Mode, Reds sabotage settlements while the landscape gradually transforms green. It is designed for players interested in colony management and science fiction strategy gameplay.
written from the facts on this page · September 2026
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