Well I remember this one day I was playing custom with some people I didn't know. They did this awesome infection safe haven game where everyone is in a maze, but there is one person above the maze in a warthog. The warthog acts as a safe haven and if the warthog goes over a human, then they are able to be infected by other zombies. If the humans are not in the safe haven, then they are invincible. Can someone find the map and gametype? I know I'm asking for a lot but thanks anyway.