This game is free if you meet one of the following conditions…
1.) you already have a Deep Silver game in your GOG library.
2.) you purchase a Deep Silver game during the current sale, til 22nd of March 2 PM UTC.
A zombie outbreak eradicated all hope of returning life back to normal, now only survival lives on. Run, hide and fight your way through the undead as Randall searches for his family in this gorgeous, gritty, destroyed world.