xeneize

Not necessarily slow zombies, the fact that zombies would bite you and infect you would change the game so much. The paranoia it would create, i mean the second you spot one lone zombie in the current game doesnt cause much concern, you could kill it and w/e if more spawn just run away. But with this new addition, the fact that zombies would bite would make everyone more paranoid to the smallest amount of zombies. I guess to make things a little easier, zombies have to take you down to bite you. Or grab a hold of you, so if you are running zombies just punch you but dont infect you. This would require a bite animation though, as I wouldnt see a zombie punching you being able to infect you.

Another thing that should be added, since this IS a zombie game. Is to introduce the fact that zombie bites infect you, and turn you into a zombie in say, 1-3 days. Making the infection visible after a whole day. Since this is the basis of fear about zombies, which cannot be seen in this game. 1 bite and its over.