687 Days on Mars

687 Days on Mars is a single player casual simulation game.

Alone on Mars, you awaken with nothing but your suit and a handful of supplies. Every breath, every drop of water, and every spark of energy must be carefully managed as you fight to survive on a planet that wants you gone - you navigate the harsh realities of life on the Red Planet. Start small and dream big. Expand your outpost with life-support systems, storage units, and advanced research …