I.T. Kid

The Last Stand stopped being a defence game in Union City. This one hands you a city: scavenge it, shoot through it, keep a companion alive and carry what you find back to a safehouse. Armor Games' own summary is 'scavenge, shoot and survive your way through Union City in this sprawling zombie action RPG', and it comes with a Survivor mode where food and sleep are part of the problem and a Run'n'Gun mode where they are not. It is the third and the most open of the three: where the first two pinned you behind a barricade, this one hands you the whole city to move through, and the scavenging becomes a route you plan rather than a spot you hold.