https://www.pcgamer.com/this-war-of-mine-is-free-to-play-for-the-weekend/

With the icy survival game Frostpunk now just a few weeks away from release, developer 11 Bit Studios is letting anyone play its previous life-is-hell simulator This War of Mine for free on Steam until April 8. 

This War of Mine is also a survival game, but with more of a real-world bent, played as a civilian struggling to survive in a besieged city shattered by war. Constant danger and a shortage of food, water, and medicine force life-and-death choices at every turn, and there's no Paragon path to victory. "During war, there are no good or bad decisions; there is only survival," the Steam listing states. "The sooner you realize that, the better."