Damned Nation is another unity 3d game with zombies where your are the only one remained in a warehouse courtyard. There is just you and an army of zombies. Shoot the zombies before they expand outside and infect the entire world. The only way of escape from that warehouse courtyard is to use a helicopter, but that helicopter is located in the other side of the courtyard. Use a variety of high powered weapons and shoot in everything what moves. Have fun.
To play Damned Nation, you will use W,A,S,D keys to move, mouse to look around, left click to shoot or hit, right click to aim, SPACE bar to jump and Shift key to run.