687 Days on Mars

About

You’re stranded on Mars with nothing but a few tools and a countdown. 687 Days on Mars puts you in charge of keeping a base running while fending off toxic air, frigid nights, and equipment breakdowns. Scavenge for materials, dig water from dry soil, and patch habitats to stave off the planet’s hostility. Progress feels fragile but achievable as you stretch resources to last nearly two Earth years. The game’s strength lies in its punishing realism. Oxygen and power fluctuations force constant recalibration, while sudden dust storms can erase days of work. Players report average playtimes of 80-100 hours as they juggle short-term fixes with long-term planning. What sets it apart is the quiet tension of managing small victories against a backdrop of endless red dust and solar flares.