This game has been made available by the Polish government for education purposes.
This War of Mine
In This War Of Mine you do not play as an elite soldier, rather a group of civilians trying to survive in a besieged city; struggling with lack of food, medicine and constant danger from snipers and hostile scavengers. The game provides an experience of war seen from an entirely new angle.
Release date: 15 Nov, 2014
Steam review: very positive
Credit: OzBargain
Game might be set to Polish language only. I'm away from my computer so can't confirm but saw it mentioned in a comment on OzBargain.