I was thinking of a game play and having a doctor can be a game mode do it's just like any other zombie match except after the first infected os chosen the game automatically nominates 2 or 3 candidates for the doctrs which only humans can participate in. And the doctr can heal a total of 5 people and brong them back to the humans side. To heal the reciantly killed humans the doctor has 10 seconds to run into the player who just died and heal them. For the game to be over all players must be eliminated or the zombies must kill the doctor. What do you guys think?