Sol One

You're alone on Mars.

The mission is over. Your crew left you behind. You've got a pressure suit, whatever you can pull out of the ground, and a long way to go before you see Earth again. There's a rocket between you and home. You just have to build it first.

Sol One is a first-person open-world survival game that tries to get the science right. It's for people who like grounded, science-driven survival where the problem-solving is the point. Your oxygen, power, and food all come from machines you set up and maintain, and keeping them running is a must for survival.

Build it up from the dirt

Mine iron, copper, silica, ice, and uranium out of the red planet. Run the raw materials through smelters and fabricators and manufacture the parts you need to turn a cramped shelter into a thriving base. The tech tree gives you a long road from scraping by to running a base that mostly takes care of itself.

A planet that wants you dead

Mars is doing its best to kill you the whole time. The surface runs out to the horizon in every direction, broken up by deep canyons, old craters, mountains, and fields of rock and coarse regolith you have to pick your way across. The sky behaves like the real thing, from rusty daylight to a cold blue sunset to the gorgeous Milky Way after dark. Dust storms brew on the horizon and roll in over the ridge, and your solar panels drop off, visibility closes in, and the comfortable margins you were working with are suddenly gone until it passes.

Beyond the airlock

Drive out across the surface to find what's worth finding, or send your autonomous rover ahead to scout and haul while you handle things back in your base. The planet is dotted with crashed spacecraft, earlier landing sites, and abandoned mission bases, and picking through them turns up materials, parts, and pieces of what happened here before you arrived. Getting somewhere far out and getting back alive is its own kind of problem when your oxygen and power are still ticking down the whole way.