The Left4dead Series is a series of zombie games at the moment their are 2. The biggest fight at the moment is Left4dead3. I would love to have another challenge to defeat. On the other hand they create more infected every game. That would really create many problems... great for zombies tough on survivors. My opinion on left4dead3 would be. 7 Survivors Louis, Zoey, Francis, Ellis, Nick, Coach, and Keith. Yeah Rochelle dies and they find Keith X). And if they were to make a left4dead3 please god make it were zombies on expert don't take so much health out of you. Left4dead2 on expert was barley beatable. Another thing please don't make it impossible to free yourself from infected. Either way I think left4dead3 would be a fun experience.