Most games involving zombies pit you as one of the last survivors, running and gunning your way through undead masses. You either can't be infected or if you are bitten, you die and it's game over. Very few other games place you as one of the zombies running around eating people.

Infected would play the middle with you as a recently bitten human, who is slowly turning into a zombie. Your character would be struggling with their transformation, resisting the urge to devour the living, even as their body slowly decomposes and their humanity is lost. Being a human and a zombie has its advantages and disadvantages, depending on the situation.

For example, the human trait, Eat Food, would allow you to eat food items such as apples or canned beans, and this would give you health. At a certain point you would trade this ability for the zombie equivalent, Devour Flesh, meaning you could no longer eat foods items, but could eat from freshly killed bodies to regain health and lower your hunger urge.

Using your infected nature you could wander through the streets, walking past zombies with little trouble. This would leave you to search for gear while a normal human survivor would get attacked. Still holding onto your humanity you'd be able to read and use tools to aid you, at least until you gave those skills up. Being an infected human means you can depending on the situation. A group of gun happy survivors are blocking your path? Attract a horde of zombies over to do your dirty work. Need to clear the road of power lines? Lose the human ability Feel Pain and pick those power lines up with little consequence.
